- Abt, G. & Reyer, H.-U. (1993).
 -  Mate choice and fitness in a hybrid frog: Rana esculenta females  prefer Rana lessonae males over their own.
 Behavioral Ecology and Sociobiology,  32, 221-228.
 - Akef, M. S. A. & Schneider, H. (1989).
 -  The eastern form of Rana ridibunda (Anura: Ranidae) inhabits the Nile  delta.
 Zoologischer Anzeiger,  223 (3/4), 129-138.
 - Aleksandrovskaja, T. O. (1976).
 -  K sistematike zelenych ljagusek Moskovskoj Oblasti [A contribution to  the taxonomy of green frogs of the Moscow District].
 Zoologiceskij Zurnal,  55 (9), 1362-1367.
 - Aleksandrovskaja, T. O. & Kotova, E. L. (1986).
 -  Predvaritel'nye dannye po vozrastnoj charakteristike ozernoj ljaguski  (Rana ridibunda Pallas) iz trech tocek Armenii [Preliminary data about age  characteristics of Rana ridibunda Pallas from Armenia].
 Trudy Zoologiceskogo Instituta Akademii Nauk SSSR [Proceedings  of the Zoological Institute, USSR Academy of Sciences],  157,  177-181.
 - Alpagut, N. & Falakali, B. (1995).
 -  Karyotype analysis of two Rana ridibunda (Ranidae; Anura) populations  in Turkey.
 Israel Journal of Zoology,  41 (4), 523-531.
 - Andreeva, A. P., Pisacenko, A. I., Borkin, L. J., & Lazarev, J. A. (1982).
 -  Strukturnye razlicija kollagenov u nekotorych vidov ljagusek roda  Rana s neodinakovoj temperaturnoj ekologiej. Vklad uglevodnych komponentov v  termostabil'nost' molekul kollagena [Structural differences in collagens of  several frog species of the genus Rana with various thermal ecology. A  contribution of carbohydrate components to the thermostability of collagen  molecules].
 Citologija,  24 (5), 561-568.
 - Angelici, F. M., Capula, M., & Riga, F. (1990).
 -  Notes on the herpetofauna of Astipalaia Island (Dodecanese, Greece).
 Brit. Herpet. Soc. Bull. (34), 31-33.
 - Antunez, A., Real, A., & Vargas, J. M. (1988).
 -  Biogeographical analysis of the amphibians in the southern valleys of  the Betic Cordillera.
 Misc. Zool. 12, 261-271.
 - Arano, B., Llorente, G., García-Paris, M., & Herrero, P. (1995).
 -  Species translocation menaces Iberian waterfrogs.
 Conservation Biology,  9 (1), 196-198.
 - Arano, B., Llorente, G., & García-Serra, N. (1993).
 -  Hybridogenetic processes involving R. perezi: distribution of the R-P  complex.
 In: 7th Ordinary General Meeting Societas Europaea  Herpetologica. 15-19 September 1993. Barcelona, Spain. Program and  Abstracts, (Bricall & et al., J., eds) p. 38.
 - Arano, B. & Llorente, G. A. (1995).
 -  Hybridogenetic processes involving R. perezi: distribution of the  P-RP system in Catalonia.
 In: Scientia Herpetologica, (et al., L., ed) pp. 41-44.
 - Arano, B., Llorente, G. A., Herrero, P., & Sanchíz, B. (1994).
 -  Current studies on Iberian water frogs.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 365-375. Zoologica Poloniae 39.
 - Arikan, H. (1990).
 -  On a new form of Rana ridibunda (Anura, Ranidae) from Turkey.
 Istanbul Üniv. Fen Fak. Biyoloji Der. 53 [1988],  81-87.
 - Axelsson, E., Nyström, P., Sidenmark, J., & Brönmark, C. (1997).
 -  Crayfish predation on amphibian eggs and larvae.
 Amphibia-Reptilia,  18 (3), 217-228.
 - Bachmann, K. & Nishioka, M. (1978).
 -  Genome size and nuclear size in Palaearctic frogs (Rana).
 Copeia,  1978 (2), 225-229.
 - Balletto, E., Cherchi, M. A., & Gasperetti, J. (1985).
 -  Amphibians of the Arabian Peninsula.
 In: Fauna of Saudi Arabia: Vol. 7, (Buettiker, W. & Krupp, F.,  eds) pp. 318-392. Kingdom Saudi Arabia Meteorol. Environ. Prot. Adm. Fauna  Publ. 7.
 - Balletto, E., Cherchi, M. A., Salvidio, S., Lattes, A., Malacrida, A., Gasperi,  G., & Doria, G. (1986).
 -  Area effect in South Western European green frogs (Amphibia,  Ranidae).
 Bollettino di Zoologia,  53, 97-109.
 - Beebee, T. J. C. (1980).
 -  Habitats of the British amphibians (3): river valley marshes.
 Biol. Conserv. 18 (4), 281-287.
 - Beerli, P. (1986).
 -  Seefrösche in einer Tümpelfrosch-Wasserfrosch-Population  in einem anthropogen beeinflussten Habitat.
 Diploma thesis Universität Zürich.
 - Beerli, P. (1994).
 -  Genetic isolation and calibration of an average protein clock in  western Palearctic water frogs of the Aegean region.
 Ph.D. dissertation Universität Zürich.
 - Beerli, P., Hotz, H., & Guex, G.-D. (1993).
 -  Genic divergence rates and calibration of an averaged protein clock  in water frogs of the Aegean region.
 In: Evolution 93. Fourth Congress of the European Society for  Evolutionary Biology, (Catzeflis & et al., F. M., eds) p. 37.  Université Montpellier II.
 - Beerli, P., Hotz, H., Guex, G.-D., & Uzzell, T. (1994a).
 -  Differential dispersal rates among water frog populations in two  eastern Mediterranean Pleistocene refugia.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 515-516. Zoologica Poloniae 39.
 - Beerli, P., Hotz, H., Tunner, H. G., Heppich, S., & Uzzell, T. (1994b).
 -  Two new water frog species from the Aegean islands Crete and  Karpathos (Amphibia, Salientia, Ranidae).
 Notulae Naturae, Academy of Natural Sciences of Philadelphia,   470, 1-9.
 - Beerli, P., Hotz, H., & Uzzell, T. (1996).
 -  Geologically dated sea barriers calibrate a protein clock for Aegean  water frogs.
 Evolution,  50 (4), 1676-1687.
 - Belcheva, R. G., Michailova, P. V., & Sofianidou, T. S. (1985).
 -  Karyological studies on Rana epeirotica and Rana ridibunda (Anura,  Amphibia) from Greece.
 Doklady Bolgarskoj Akademii Nauk [Comptes rendus de  l'Académie bulgare des Sciences],  38 (10), 1387-1390.
 - Bergen, K. (1994).
 -  Effects of the frequency of Rana lessonae and Rana esculenta  males on mate choice of hybridogenetic females.
 Diploma thesis Universität Zürich.
 - Bergen, K., Semlitsch, R. D., & Reyer, H.-U. (1997).
 -  Hybrid female matings are directly related to the availability of  Rana lessonae and Rana esculenta males in experimental populations.
 Copeia,  1997 (2), 275-283.
 - Berger, L. (1959).
 -  Interesujace stanowiska zaby smieszki (Rana ridibunda Pall.) w  Wielkopolsce. [Most interesting stations of Rana ridibunda Pall in Major  Poland.].
 Przyroda Polski Zachodniej,  2 (3/4/5/6), 297-298.
 - Berger, L. (1964).
 -  Is Rana esculenta lessonae Camerano a distinct species?
 Annales zoologici,  22 (13), 245-261.
 - Berger, L. (1966).
 -  Biometrical studies on the population of green frogs from the  environs of Poznan.
 Annales zoologici,  23 (11), 303-324.
 - Berger, L. (1967).
 -  Embryonal and larval development of F1 generation of green frogs  different combinations.
 Acta zoologica cracoviensia,  12 (7), 123-160.
 - Berger, L. (1968).
 -  Morphology of the F1 generation of various crosses within Rana  esculenta complex.
 Acta zoologica cracoviensia,  13 (13), 301-324.
 - Berger, L. (1970).
 -  Some characteristics of crosses within Rana esculenta complex in  postlarval development.
 Annales zoologici,  27 (17), 373-416.
 - Berger, L. (1971a).
 -  Sex ratio in the F1 progeny within forms of Rana esculenta complex.
 Genetica polonica,  12 (1-2), 87-101.
 - Berger, L. (1971b).
 -  Viability, sex and morphology of F2 generation within forms of Rana  esculenta complex.
 Zoologica Poloniae,  21 (4), 345-393.
 - Berger, L. (1973a).
 -  Sexual maturity of males within forms of Rana esculenta complex.
 Zoologica Poloniae,  22 (3), 177-188.
 - Berger, L. (1973b).
 -  Some characteristics of backcrosses within forms of Rana esculenta  complex.
 Genetica polonica,  14 (4), 413-430.
 - Berger, L. (1973c).
 -  Systematics and hybridization in European green frogs of Rana  esculenta complex.
 Journal of Herpetology,  7 (1), 1-10.
 - Berger, L. (1976).
 -  Hybrids of B2 generation of European water frogs (Rana esculenta  complex).
 Annales zoologici,  33 (12), 201-214.
 - Berger, L. (1977).
 -  Systematics and hybridization in the Rana esculenta complex.
 In: The reproductive biology of amphibians, (Taylor, H., D.,  Guttman, & I., S., eds) pp. 367-388. Plenum Press New York and London.
 - Berger, L. (1979).
 -  Egg size as an index of phenotype in progeny of Rana esculenta  females.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 187-202.
 - Berger, L. (1983).
 -  Western Palearctic water frogs (Amphibia, Ranidae): systematics,  genetics and population compositions.
 Experientia,  39 (2), 127-130.
 - Berger, L. (1984).
 -  Hibernation of the European water frogs (Rana esculenta complex).
 Zoologica Poloniae,  29 (1-2 [1982]), 57-72.
 - Berger, L. (1987a).
 -  Ewolucja systemów genetycznych u zab zielonych.
 Kosmos,  36 (3), 395-415.
 - Berger, L. (1987b).
 -  Impact of agriculture intensification on Amphibia.
 In: Proceedings of the 4th Ordinary General Meeting of the  Societas Europaea Herpetologica, (Gelder, van, J. J., Strijbosch, H.,  Bergers, & M., P. J., eds) pp. 79-82. Faculty of Sciences Nijmegen.
 - Berger, L. (1988a).
 -  An all-hybrid water frog population persisting in agrocenoses of  central Poland (Amphibia, Salientia, Ranidae).
 Proceedings of the Academy of Natural Sciences of Philadelphia,   140 (1), 202-219.
 - Berger, L. (1988b).
 -  Principles of studies of European water frogs.
 Acta zoologica cracoviensia,  31 (21), 563-580 + Plates  XXIV-XXVIII.
 - Berger, L. (1989).
 -  Disappearance of amphibian larvae in the agricultural landscape.
 Ecology International Bulletin,  17, 65-73.
 - Berger, L. (1990).
 -  On the origin of genetic systems in European water frog hybrids.
 Zoologica Poloniae,  35 (1-4 [1988]), 5-32.
 - Berger, L. (1994).
 -  Some peculiar phenomena in European water frogs.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 267-280. Zoologica Poloniae 39.
 - Berger, L. & Berger, W. A. (1992).
 -  Progeny of water frog populations in central Poland.
 Amphibia-Reptilia,  13 (2), 135-146.
 - Berger, L. & Berger, W. A. (1994).
 -  Persistence of all-hybrid water frog populations (Rana kl. esculenta)  in northern Germany.
 Genetica polonica,  35 (1-2), 73-80.
 - Berger, L. & Günther, R. (1988).
 -  Genetic composition and reproduction of water frog populations (Rana  kl. esculenta synklepton) near nature reserve Serrahn, GDR.
 Archiv für Naturschutz und Landschaftsforschung, Berlin,   28 (4), 265-280.
 - Berger, L. & Günther, R. (1992).
 -  Inheritance patterns of water frog males from the environments of  nature reserve Steckby, Germany.
 Zoologica Poloniae,  37 (1-4), 87-100.
 - Berger, L., Hotz, H., & Roguski, H. (1986).
 -  Diploid eggs of Rana esculenta with two Rana ridibunda genomes.
 Proceedings of the Academy of Natural Sciences of Philadelphia,   138 (1), 1-13.
 - Berger, L. & Ogielska, M. (1994).
 -  Spontaneous haploid-triploid mosaicism in the progeny of a Rana kl.  esculenta female and Rana lessonae males.
 Amphibia-Reptilia,  15, 143-152.
 - Berger, L. & Roguski, H. (1978).
 -  Ploidy of progeny from different egg size classes of Rana esculenta  L.
 Folia biologica (Kraków),  26 (4), 231-248.
 - Berger, L., Roguski, H., & Uzzell, T. (1978).
 -  Triploid F2 progeny of water frogs (Rana esculenta complex).
 Folia biologica (Kraków),  26 (3), 135-152.
 - Berger, L. & Rybacki, M. (1992).
 -  Sperm competition in European water frogs.
 Alytes,  10 (4), 113-116.
 - Berger, L. & Rybacki, M. (1994).
 -  Sperm competition between two species of European water frogs (Rana  ridibunda and Rana lessonae).
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 281-291. Zoologica Poloniae 39.
 - Berger, L., Rybacki, M., & Hotz, H. (1994).
 -  Artificial fertilization of water frogs.
 Amphibia-Reptilia,  15 (4), 408-413.
 - Berger, L. & Truszkowski, J. (1980).
 -  Viability and inheritance of characters in water frogs (Rana  esculenta complex) in agrocenozes.
 Genetica polonica,  21 (3), 309-323.
 - Berger, L. & Uzzell, T. (1977).
 -  Vitality and growth of progeny from different egg size classes of  Rana esculenta L. (Amphibia, Salientia).
 Zoologica Poloniae,  26 (3-4), 291-317.
 - Berger, L. & Uzzell, T. (1980).
 -  The eggs of European water frogs (Rana esculenta complex) and their  hybrids.
 Folia biologica (Kraków),  28 (1), 3-25.
 - Berger, L., Uzzell, T., & Hotz, H. (1982).
 -  Crossing experiments between some western Palearctic species of water  frogs (Salientia: Ranidae).
 Vertebrata hungarica,  21, 33-45 + 2 plates.
 - Berger, L., Uzzell, T., & Hotz, H. (1988).
 -  Sex determination and sex ratios in western Palearctic water frogs:  XX and XY female hybrids in the Pannonian Basin?
 Proceedings of the Academy of Natural Sciences of Philadelphia,   140 (1), 220-239.
 - Berger, L., Uzzell, T., & Hotz, H. (1994).
 -  Postzygotic reproductive isolation between Mendelian species of  European water frogs.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 209-242. Zoologica Poloniae 39.
 - Bergmans, W. & Zuiderwijk, A. (1986).
 -  Atlas van de Nederlandse amfibieën en reptielen en hun  bedreiging.
 Hoogwoud: Koninklijke Nederlandse Natuurhistorische Vereniging.
 - Beskov, V. (1965).
 -  Barchu namiraneto na zelenata vodna zaba (Rana esculenta L.) v  Balgarija [Über das Vorkommen des Teichfrosches (Rana esculenta L.) in  Bulgarien].
 Izvestija na Zoologiceskija Institut s Muzej, Balgarska  Akademija na Naukite [Bulletin de l'Institut de Zoologie et Musée,  Académie Bulgare des Sciences],  19, 45-54.
 - Binkert, J. (1981).
 -  Untersuchungen über die Letalität der inter-se-Kreuzung  von Rana esculenta.
 Ph.D. dissertation Universität Zürich.
 - Binkert, J., Borner, P., & Chen, P. S. (1982).
 -  Rana esculenta complex: an experimental analysis of lethality and  hybridogenesis.
 Experientia,  38 (11), 1283-1292.
 - Blankenhorn, H. (1974).
 -  Soziale Organisation einer Mischpopulation von Rana lessonae  Camerano und Rana esculenta Linnaeus.
 Ph.D. dissertation Universität Zürich.
 - Blankenhorn, H. J. (1973).
 -  Zum Stand der Forschung über die Verbreitung der  Grünfrösche im Kanton Zürich.
 Revue suisse de Zoologie,  80 (3), 656-661.
 - Blankenhorn, H. J. (1977).
 -  Reproduction and mating behavior in Rana lessonae-Rana esculenta  mixed populations.
 In: The reproductive biology of amphibians, (Taylor, H., D.,  Guttman, & I., S., eds) pp. 389-410. Plenum Press New York and London.
 - Blankenhorn, H. J., Heusser, H., & Notter, P. (1973).
 -  Zur Verbreitung von Rana esculenta Linnaeus und Rana lessonae  Camerano im Zürcher Oberland.
 Revue suisse de Zoologie,  80 (3), 662-666.
 - Blankenhorn, H. J., Heusser, H., & Vogel, P. (1971).
 -  Drei Phänotypen von Grünfröschen aus dem Rana  esculenta-Komplex in der Schweiz.
 Revue suisse de Zoologie,  78, 1242-1247.
 - Böhme, G. & Günther, R. (1979).
 -  Osteological studies in the European water frogs Rana ridibunda, Rana  lessonae and Rana "esculenta" (Anura, Ranidae).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 203-215.
 - Böhme, W. (1978).
 -  Die Identität von Rana esculenta bilmaensis Angel, 1936, aus der  südlichen Sahara.
 Revue suisse de Zoologie,  85 (3), 641-644 + Pl. I.
 - Borkin, L. J. (1983).
 -  I seminar po izuceniju zelenych ljagusek.
 Zoologiceskij Zurnal,  62 (3), 473-474.
 - Borkin, L. J., Berger, L., & Günther, R. (1984).
 -  Giant tadpoles of water frogs within Rana esculenta complex.
 Zoologica Poloniae,  29 [1982] (1-2), 103-127.
 - Borkin, L. J., Caune, I. A., Pikulik, M. M., & Sokolova, T. M. (1986).
 -  Distribution and structure of the green frog complex in the USSR.
 In: Studies in herpetology, (Rocek, Z., ed) pp. 675-678.  Charles Univ. Prague.
 - Borkin, L. J. & Darevskij, I. S. (1980).
 -  Setcatoe (gibridogennoe) vidoobrazovanie u pozvonocnych [Reticulate  (hybridogenous) speciation in vertebrates].
 Zurnal Obscej Biologii, Moskva,,  41 (4), 485-506.
 - Borkin, L. J., Garanin, W. I., Tichenko, N. T., & Zaune, I. A. (1979).
 -  Some results in the green frogs survey in the USSR.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 153-170 + plate VI.
 - Borkin, L. J., Günther, R., Rozanov, Y. M., & Vinogradov, A. E. (1989).
 -  Inheritance in diploid and triploid hybridogenetic Rana esculenta  males: evidence from DNA flow cytometry.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [36]. University of Kent Canterbury.
 - Borkin, L. J., Vinogradov, A. E., Rosanov, J. M., & Caune, I. A. (1987).
 -  Hemiclonal inheritance in the hybridogenetic complex Rana esculenta:  evidence from flow DNA-cytometry.
 Dokl. Akad. Nauk SSSR,  295, 1261-1264.
 - Briggs, J. (1981).
 -  Population structure of Rana ridibunda in the Al-Qatif oasis.
 Proceedings Saudi Biol. Soc. 5, 333-345.
 - Bruno, S. (1989).
 -  Introduction to a study of the herpetofauna of Albania.
 British Herpetological Society Bulletin,  29, 16-41.
 - Brychta, B. H. & Tunner, H. G. (1994).
 -  Flow cytometric analysis of spermatogenesis in triploid Rana  esculenta.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) p. 507. Zoologica Poloniae 39.
 - Brzoska, J. (1980).
 -  Quantitative studies on the elicitation of the electrodermal response  by calls and synthetic acoustical stimuli in Rana lessonae Camerano, Rana r.  ridibunda Pallas and the hybrid Rana "esculenta" L. (Anura, Amphibia).
 Behavioural Processes,  5, 113-141.
 - Brzoska, J. (1982).
 -  Vocal response of male European water frogs (Rana esculenta complex)  to mating and territorial calls.
 Behavioural Processes,  7 (1), 37-47.
 - Bucci, S., Ragghianti, M., Mancino, G., Berger, L., Hotz, H., & Uzzell, T.  (1990).
 -  Lampbrush and mitotic chromosomes of the hemiclonally reproducing  hybrid Rana esculenta and its parental species.
 Journal of Experimental Zoology,  255 (1), 37-56.
 - Buckley, D., Arano, B., Herrero, P., & Llorente, G. (1996).
 -  Population structure of Moroccan water frogs: genetic cohesion  despite a fragmented distribution.
 Journal of Zoological Systematics and Evolutionary Research,   34 (3), 173-179.
 - Buckley, D., Arano, B., Herrero, P., Llorente, G. A., & Esteban, M. (1994).
 -  Moroccan water frogs vs R. perezi: allozyme studies show up their  differences.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 377-385. Zoologica Poloniae 39.
 - Bullini, L. & Nascetti, G. (1990).
 -  Speciation by hybridization in phasmids and other insects.
 Canadian Journal of Zoology,  68, 1747-1760.
 - Burny, J. & Parent, G. (1985).
 -  Les grenouilles vertes de la Belgique et des régions limitrophes.  Données chorologiques et écologiques.
 Alytes,  4 (1), 12-33.
 - Busack, S. D. (1977).
 -  Zoogeography of amphibians and reptiles in Cádiz Province, Spain.
 Annals of Carnegie Museum,  46 (17), 285-301.
 - Busack, S. D. (1986).
 -  Biogeographic analysis of the herpetofauna separated by the formation  of the Strait of Gibraltar.
 National Geographic Research,  2 (1), 17-36.
 - Carnevali, O., Mosconi, G., Sabbieti, M. G., Murri, C. A., Villani, P., &  Polzonetti-Magni, A. M. (1993).
 -  Some aspects of the reproductive biology of Rana esculenta at  sea-level and montane habitats.
 Amphibia-Reptilia,  14 (4), 381-388.
 - Caune, I. A. & Borkin, L. J. (1989).
 -  An unusual population system (bisexual Rana lessonae with  hybridogenetic male R. esculenta) in the European green frog complex.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [60]. University of Kent Canterbury.
 - Caune, I. A. & Borkin, L. J. (1993).
 -  Novyj variant odnopolo-biseksual'nych populjacionnych sistem u  Evropejskich zelenych ljagusek (Rana esculenta complex) [A new kind of  unisexual-bisexual population systems in European green frogs (Rana esculenta  complex)].
 In: Gibridizacija i problema vida u pozvonocnych, (Rossolimo,  L., O., Panov, N., E., Tomkovic, & S., P., eds) volume 30 pp. 34-52.  Sbornik Trudov Zoologiceskogo Muzeja MGU Moskva.
 - Cederlund, E., Peralba, J. M., Pares, X., & Joernvall, H. (1991).
 -  Amphibian alcohol dehydrogenase, the major frog liver enzyme.  Relationships to other forms and assessment of an early gene duplication  separating vertebrate class I and class III alcohol dehydrogenases.
 Biochemistry Wash. 30 (11), 2811-2816.
 - Chen, P. S. & Stumm-Zollinger, E. (1986).
 -  Patterns of protein synthesis in oocytes and early embryos of Rana  esculenta complex.
 Roux's Arch. Dev. Biol. 195, 1-9.
 - Cogalniceanu, D. & Tesio, C. (1993).
 -  On the presence of Rana lessonae in Rumania.
 Amphibia-Reptilia,  14 (1), 90-93.
 - Crew, F. A. E. (1921).
 -  Sex-reversal in frogs and toads. A review of the recorded cases of  abnormality of the reproductive system and an account of a breeding  experiment.
 Journal of Genetics,  11, 141-181.
 - Crochet, P.-A., Dubois, A., Ohler, A., & Tunner, H. (1995).
 -  Rana (Pelophylax) ridibunda Pallas, 1771, Rana (Pelophylax) perezi  Seoane, 1885 and their associated klepton (Amphibia, Anura): morphological  diagnoses and description of a new taxon.
 Bulletin du Muséum National d'Histoire Naturelle, Paris,   (4) 17 (1-2), 11-30.
 - Dandová, R., Kotlík, P., & Zavadil, V. (1995).
 -  Ein Fall von Albinismus beim Kleinen Wasserfrosch (Rana lessonae).
 Salamandra,  31 (1), 57-60.
 - Dawley, R. M. & Bogart, J. P. (1989).
 -  Evolution and ecology of unisexual vertebrates, volume 466.
 Albany, New York: New York State Museum Bulletin 466.
 - de Quiroga, G. B., Gutierrez, P., Rojo, S., & Alonso-Bedate, M. (1984).
 -  A comparative study of superoxide dismutase in amphibian tissues.
 Comparative Biochemistry and Physiology,  B 77 (3),  589-593.
 - Degani, G. (1986).
 -  Growth and behaviour of six species of amphibian larvae in a winter  pond in Israel.
 Hydrobiologia,  140, 5-10.
 - Diekamp, B. & Schneider, H. (1988).
 -  Neuronal processing of conspecific and related calls in the torus  semicircularis of Rana r. ridibunda Pall. (Anura): single-unit recordings.
 $$$$,  .
 - Dubois, A. (1977).
 -  Les problèmes de l'espèce chez les Amphibiens Anoures.
 In: Les problèmes de l'espèce dans le règne animal,  (Bocquet, C., Génermont, J., & Lamotte, M., eds) volume 39 of Mémoires de la Société zoologique de France pp. 161-284.
 - Dubois, A. (1979).
 -  Anomalies and mutations in natural populations of the Rana  "esculenta" complex (Amphibia, Anura).
 Mitteilungen aus dem zoologischen Museum in Berlin,  51  (1), 59-87 + plate I.
 - Dubois, A. (1992).
 -  Notes sur la classification des Ranidae (Amphibiens Anoures).
 Bulletin mensuel de la Société Linnéenne de Lyon,   61 (10), 305-352.
 - Dubois, A. & Günther, R. (1982).
 -  Klepton and synklepton: two new evolutionary systematics categories  in zoology.
 Zoologische Jahrbücher (Systematik),  109, 290-305.
 - Dubois, A. & Ohler, A. (1994a).
 -  Catalogue of names of frogs of the subgenus Pelophylax (Amphibia,  Anura, genus Rana): a few additions and corrections.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 205-208. Zoologica Poloniae 39.
 - Dubois, A. & Ohler, A. (1994b).
 -  Frogs of the subgenus Pelophylax (Amphibia, Anura, genus Rana): a  catalogue of available and valid scientific names, with comments on  name-bearing types, complete synonymies, proposed common names, and maps  showing all type localities.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 139-204. Zoologica Poloniae 39.
 - Ebendal, T. (1976).
 -  A Swedish population of Rana lessonae - chromosomal features and  relations to the Rana esculenta complex.
 Norwegian Journal of Zoology,  24, 231-232.
 - Ebendal, T. (1977).
 -  Karyotype and serum protein pattern in a Swedish population of Rana  lessonae (Amphibia, Anura).
 Hereditas,  85, 75-80.
 - Ebendal, T. (1978).
 -  De gåtfulla gröngrodorna.
 Fauna och Flora,  73 (1), 9-22.
 - Ebendal, T. (1979).
 -  Distribution, morphology and taxonomy of the Swedisch green frogs  (Rana esculenta complex).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 143-152 + plate V.
 - Ebendal, T., B., B., & Ryman, N. (1981).
 -  De svenska gröngrodorna (Rana esculenta-komplexet).
 Fauna och Flora,  76, 193-204.
 - Ebendal, T. & Uzzell, T. (1982).
 -  Ploidy and immunological distance in Swedish water frogs (Rana  esculenta complex).
 Amphibia-Reptilia,  3 (2/3), 125-133.
 - Eikhorst, R. (1984).
 -  Untersuchungen zur Verwandtschaft der Grünfrösche.  Verbreitung, Struktur und Stabilität von reinen Rana  esculenta-Populationen.
 Ph.D. dissertation Universität Bremen.
 - Eikhorst, R. (1987).
 -  Der Laich des Teichfrosches Rana esculenta Linnaeus, 1758 in einer  reinen Bastardpopulation (Anura: Ranidae).
 Salamandra,  23 (2/3), 122-131.
 - Eikhorst, R. (1988).
 -  Der Rana esculenta-Komplex - ein Überblick über 20 Jahre  Wasserfroschforschung.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 7-22. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Eikhorst, R. & Rahmel, U. A. P. (1986).
 -  Zur Verbreitung des Kleinen Teichfrosches Rana lessonae Camerano,  1872 und des Seefrosches Rana ridibunda Pallas, 1771 in Niedersachsen  (Salientia, Ranidae).
 Salamandra,  22 (1), 79-92.
 - Eiselt, J. & Schmidtler, J. F. (1973).
 -  Froschlurche aus dem Iran unter Berücksichtigung ausseriranischer  Populationsgruppen.
 Ann. naturhistor. Mus. Wien,  77, 181-243.
 - Engelmann, W.-E. (1972).
 -  Disk-Elektrophorese der Serumproteine von Wasserfröschen. Ein  Beitrag zur Diskussion über den Hybridcharakter von Rana esculenta L.
 Acta biologica et medica germanica,  29, 431-435.
 - Engelmann, W.-E. (1973).
 -  Zur Frage der verwandtschaftlichen Beziehungen europäischer  Grünfrösche (Gattung Rana). Eine vergleichende elektrophoretische  Untersuchung der Serumproteine.
 Zoologische Jahrbücher (Systematik),  100 (2),  183-196.
 - Escher, K. (1972).
 -  Die Amphibien des Kantons Zürich. (Bestand und Lebensbedingungen  1967-1969; Schlüsse für den Amphibienschutz).
 Vierteljahrsschrift der naturforschenden Gesellschaft in  Zürich,  117 (Schlussheft), 335-380.
 - Esteban, M., Paris, M. G., & Castanet, J. (1996).
 -  Use of bone histology in estimating the age of frogs (Rana perezi)  from a warm temperate climate area.
 Canadian Journal of Zoology,  74 (10), 1914-1921.
 - Feldmann, R. & Preywisch, K. (1973).
 -  Seefrosch, Wasserfrosch und Kleiner Grünfrosch im Wesertal bei  Höxter (Westfalen).
 Natur und Heimat,  33 (4), 120-126.
 - Ferri, V. & Dell'Acqua, A. (1985).
 -  Dati inediti sulla distribuzione in Liguria di Rana ridibunda  (Amphibia Ranidae).
 Natura, Milano,,  76 (1-4), 49-52.
 - Fioramonti, E. (1994).
 -  Effects of TPT and pH on growth and development of tadpoles of  R. lessonae and R. esculenta.
 Diploma thesis Universität Zürich.
 - Fioramonti, E., Semlitsch, R. D., Reyer, H.-U., & Fent, K. (1996).
 -  Long-term effects of triphenyltin and pH on performance of Rana  lessonae and Rana esculenta tadpoles.
 Environ. Toxicol. Chem. (in review),  .
 - Fog, K. (1994).
 -  Water frogs in Denmark: population types and biology.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 305-330. Zoologica Poloniae 39.
 - Galgano, M. (1931a).
 -  Osservazioni e considerazioni intorno ai processi spermatogenetici  normale ed aberranti di Rana esculenta L.
 Monitore zoologico italiano,  42 (9-10), 297-307.
 - Galgano, M. (1931b).
 -  Il problema dell'esistenza del cromosoma del sesso in Rana esculenta  L.
 Monitore zoologico italiano,  42 (4-5), 89-92.
 - Galgano, M. (1935).
 -  Studi intorno al comportamento della cromatina nella spermatogenesi  di "Rana esculenta" L. III. L'attività spermatogenetica nel suo insieme.
 Archivio italiano di Anatomia e di Embriologia,  35 (1),  1-68.
 - Galgano, M. & Morescalchi, A. (1966).
 -  Differenze sessuali nel diplotene di Rana esculenta L.
 Rendiconto Accad. Sci. Fis. Mat. Napoli,  (4) 33 (105),  79-87.
 - Gavasso, S. (1992).
 -  Anti-predator behavior in tadpoles of the bisexual hybrid system  of Rana lessonae, Rana esculenta, and Rana ridibunda.
 Diploma thesis Universität Zürich.
 - Giorgi, F. & Galleni, L. (1972).
 -  The lampbrush chromosomes of Rana esculenta L. (Amphibia - Anura).
 Caryologia,  25, 107-123.
 - Graf, J.-D. (1986).
 -  Population genetics of the Rana esculenta complex: a model.
 In: Studies in herpetology, (Rocek, Z., ed) pp. 175-179.  Charles Univ. Prague.
 - Graf, J.-D., Karch, F., & Moreillon, M.-C. (1977).
 -  Biochemical variation in the Rana esculenta complex: a new hybrid  form related to Rana perezi and Rana ridibunda.
 Experientia,  33 (12), 1582-1584.
 - Graf, J.-D. & Müller, W. P. (1979).
 -  Experimental gynogenesis provides evidence of hybridogenetic  reproduction in the Rana esculenta complex.
 Experientia,  35 (12), 1574-1576.
 - Graf, J.-D. & Pelaz, M. P. (1989a).
 -  Cytogenetic analysis of spermatogenesis in unisexual allotriploid  males from a Rana lessonae - Rana kl. esculenta mixed population.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [124]. University of Kent Canterbury.
 - Graf, J.-D. & Pelaz, M. P. (1989b).
 -  Evolutionary genetics of the Rana esculenta complex.
 In: Evolution and ecology of unisexual vertebrates, (Dawley,  M., R., Bogart, & P., J., eds) pp. 289-302. New York State Museum Bulletin  466 Albany, New York.
 - Graf, J.-D. & Pelaz, M. P. (1989c).
 -  Evolutionary genetics of the Rana esculenta complex.
 In: Evolution and ecology of unisexual vertebrates, (Dawley,  M., R., Bogart, & P., J., eds) pp. 289-302. New York State Museum Bulletin  466 Albany, New York.
 - Greven, H., Glandt, D., & Schindelmeiser, I. (1988).
 -  Zur Kenntnis der Wasserfrösche Nordrhein-Westfalens. I.  Untersuchungen an einer Rana esculenta/Rana lessonae-Population des  Teichgutes Hausdülmen.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 105-116. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Grillitsch, B. & Chovanec, A. (1995).
 -  Heavy metals and pesticides in anuran spawn and tadpoles, water, and  sediment.
 Toxicol. Environ. Chem. 50 (1-4), 131-155.
 - Grossenbacher, K. (1988a).
 -  Verbreitung der Wasserfrösche in der Schweiz.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 129-134. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Grossenbacher, K. (1988b).
 -  Verbreitungsatlas der Amphibien der Schweiz.
 Documenta Faunistica Helvetiae,  7, 1-207.
 - Gubányi, A. (1992).
 -  Distribution of green frogs (Rana esculenta complex, Anura: Ranidae)  in Hungary.
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 205-210.
 - Gubányi, A. (1995).
 -  Biometrical investigation of water frogs in the Szigetköz  Landscape Protection Area.
 Miscellanea Zoologica Hungarica,  10, 117-126.
 - Gubányi, A. & Creemers, R. (1994).
 -  Population structure of water frogs in a floodplain of the river  Danube (Szigetköz) in Hungary.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 441-445. Zoologica Poloniae 39.
 - Gubányi, A., Havassy, L., Kéri, G., & Pekli, J. (1992).
 -  Effect of cGnRH and different GnRH analogues on breeding behaviour of  water frogs (Rana esculenta complex, Anura: Ranidae).
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 211-214.
 - Gubányi, A. & Korsós, Z. (1989).
 -  Morphological and biochemical comparison of Hungarian water frogs.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [131]. University of Kent Canterbury.
 - Gubányi, A. & Korsós, Z. (1992a).
 -  Morphological analysis of two Hungarian water frog (Rana  lessonae-esculenta) populations.
 Amphibia-Reptilia,  13 (3), 235-242.
 - Gubányi, A. & Korsós, Z. (1992b).
 -  Ploidy of Rana esculenta specimens of an E-L population in the  Kis-Balaton Landscape Protection Area.
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 215-218.
 - Guerrini, F., Bucci, S., Ragghianti, M., Mancino, G., Hotz, H., Uzzell, T., &  Berger, L. (1997).
 -  Genomes of two water frog species resist germ line exclusion in  interspecies hybrids.
 Journal of Experimental Zoology,  279 (2), 163-176.
 - Guerrini, F., Ragghianti, M., Bucci, S., Mancino, G., Berger, L., Hotz, H.,  Uzzell, T., & Guex, G.-D. (1996).
 -  Centromeric satellites in hemiclonal hybrid green water frogs.
 Acta I
 Congr. S.H.I., Museo Reg. Sc. Nat., Torino,   , 59.
 - Guerrini, F., Ragghianti, M., Bucci, S., Mancino, G., Berger, L., Hotz, H.,  Uzzell, T., & Guex, G.-D. (1994).
 -  Repetitive DNA in the hemiclonal hybrid Rana esculenta and its  parental species: chromosomal location of two satellites.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 503-504. Zoologica Poloniae 39.
 - Guex, G.-D., Beerli, P., Barbour, A. D., & Hotz, H. (1993).
 -  A dynamic model to describe equilibrium conditions in mixed  populations of a hemiclonal hybrid and its sexual host in European water  frogs.
 In: Evolution 93. Fourth Congress of the European Society for  Evolutionary Biology, (Catzeflis & et al., F. M., eds) p. 158.  Université Montpellier II.
 - Gulve, P. S. (1994).
 -  Distribution and extinction patterns within a northern metapopulation  of the pool frog, Rana lessonae.
 Ecology,  75 (5), 1357-1367.
 - Günther, R. (1968).
 -  Morphologische und ökologische Untersuchungen zur Unterscheidung  von Rana esculenta L. und Rana ridibunda Pall.
 Zoologische Jahrbücher (Systematik),  95 (1-2),  229-264.
 - Günther, R. (1969).
 -  Paarungsrufe und reproduktive Isolationsmechanismen bei  europäischen Anuren der Gattung Rana (Amphibia).
 Forma et Functio,  1, 263-284.
 - Günther, R. (1970).
 -  Der Karyotyp von Rana ridibunda Pall. und das Vorkommen von  Triploidie bei Rana esculenta L. (Anura, Amphibia).
 Biologisches Zentralblatt,  89 (3), 327-342.
 - Günther, R. (1973).
 -  Über die verwandtschaftlichen Beziehungen zwischen den  europäischen Grünfröschen und den Bastardcharakter von Rana  esculenta L. (Anura).
 Zoologischer Anzeiger,  190 (3/4), 250-285.
 - Günther, R. (1974).
 -  Neue Daten zur Verbreitung und Ökologie der Grünfrösche  (Anura, Ranidae) in der DDR.
 Mitteilungen aus dem zoologischen Museum in Berlin,  50  (2), 287-298.
 - Günther, R. (1975a).
 -  Untersuchungen der Meiose bei Männchen von Rana ridibunda Pall.,  Rana lessonae Cam. und deren Bastardform "Rana esculenta" L. (Anura).
 Biologisches Zentralblatt,  94 (3), 277-294.
 - Günther, R. (1975b).
 -  Zum natürlichen Vorkommen und zur Morphologie triploider  Teichfrösche, "Rana esculenta", L., in der DDR (Anura, Ranidae).
 Mitteilungen aus dem zoologischen Museum in Berlin,  51  (1), 145-158.
 - Günther, R. (1977).
 -  Die Erythrozytengrösse als Kriterium zur Unterscheidung diploider  und triploider Teichfrösche, Rana "esculenta" L. (Anura).
 Biologisches Zentralblatt,  96 (4), 457-466.
 - Günther, R. (1978).
 -  Zur Larvenmorphologie von Rana ridibunda Pall., R. lessonae Cam. und  deren Bastard R. "esculenta" L. (Anura, Ranidae).
 Mitteilungen aus dem zoologischen Museum in Berlin,  54  (1), 161-179.
 - Günther, R. (1979a).
 -  Die europäische Wasserfrosch-Gruppe - ein evolutionsbiologischer  Sonderfall.
 Biologische Rundschau,  17, 217-228.
 - Günther, R. (1979b).
 -  General remarks on the evolutionary genetics of the European water  frog complex.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 7-11.
 - Günther, R. (1982).
 -  Ergebnisse experimenteller Kreuzungen zwischen Wasserfröschen  (Anura, Ranidae) aus verschiedenen Ländern Europas und Mittelasiens.
 Vertebrata hungarica,  21, 157-167.
 - Günther, R. (1983).
 -  Zur Populationsgenetik der mitteleuropäischen Wasserfrösche  des Rana esculenta-Synkleptons (Anura, Ranidae).
 Zoologischer Anzeiger,  211 (1/2), 43-54.
 - Günther, R. (1988).
 -  Bibliographie der europäischen Wasserfrösche (Anura: Ranidae)  für die Jahre 1960-1987.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 161-199. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Günther, R. (1990).
 -  Die Wasserfrösche Europas (Anura - Froschlurche), volume  600.
 Wittenberg Lutherstadt: Die Neue Brehm-Bücherei.
 - Günther, R. & Hähnel, S. (1976).
 -  Untersuchungen über den Genfluss zwischen Rana ridibunda und Rana  lessonae sowie die Rekombinationsrate bei der Bastardform Rana "esculenta"  (Anura, Ranidae).
 Zoologischer Anzeiger,  197 (1/2), 23-38.
 - Günther, R. & Klewen, R. (1988).
 -  Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche.
 Duisburg: Jahrbuch für Feldherpetologie, Beiheft.
 - Günther, R. & Koref-Santibañez, S. (1983).
 -  Die LDH-B-Isoenzyme von Wasserfröschen (Anura, Ranidae) aus  verschiedenen Teilen Europas und Mittelasiens.
 Zoologischer Anzeiger,  210 (5/6), 369-374.
 - Günther, R. & Lübcke, S. (1979).
 -  Serological studies in water frogs from the GDR, Bulgaria, and the  Soviet Union.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 225-229.
 - Günther, R. & Plötner, J. (1988).
 -  Zur Problematik der klonalen Vererbung bei Rana kl. esculenta  (Anura).
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 23-46. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Günther, R. & Plötner, J. (1989).
 -  Are there mating preferences among water frog hybrids (Rana kl.  esculenta)?
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [132]. University of Kent Canterbury.
 - Günther, R. & Plötner, J. (1994).
 -  Morphometric, enzymological and bioacoustic studies in Italian water  frogs (Amphibia, Ranidae).
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 387-415. Zoologica Poloniae 39.
 - Günther, R., Plötner, J., & Tetzlaff, I. (1991).
 -  Zu einigen Merkmalen der Wasserfrösche (Rana synkl. esculenta)  des Donau-Deltas.
 Salamandra,  27 (4), 246-265.
 - Günther, R., Uzzell, T., & Berger, L. (1979).
 -  Inheritance patterns in triploid Rana "esculenta" (Amphibia,  Salientia).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 35-57.
 - Gutmann, E. (1994).
 -  Heterosis bei Wasserfröschen? Nachkommen verschiedener  Kreuzungen im Fitnessvergleich.
 Diploma thesis Universität Zürich.
 - Gutmann, E., Hotz, H., Semlitsch, R. D., Guex, G.-D., Beerli, P., Berger, L.,  & Uzzell, T. (1994).
 -  Spontaneous heterosis in larval life-history traits of hemiclonal  water frog hybrids.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 527-528. Zoologica Poloniae 39.
 - Halfmann, H. & Müller, P. (1972).
 -  Populationsuntersuchungen an Grünfröschen im Saar-Mosel-Raum.
 Salamandra,  8 (3/4), 112-116.
 - Hecnar, S. J. & MCloskey, R. T. (1996).
 -  Regional dynamics and the status of amphibians.
 Ecology,  77 (7), 2091-2097.
 - Hemmer, H. (1977).
 -  Studien an einer nordwestdeutschen Grünfroschpopulation als  Beitrag zur Bestimmungsproblematik und zur Rolle der Selektion im Rana  esculenta-Komplex (Amphibia: Salientia: Ranidae).
 Salamandra,  13 (3/4), 166-173.
 - Hemmer, H. (1979).
 -  Contribution to diagnostic problems and selection within the Rana  esculenta complex.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 125-129.
 - Hemmer, H. & Kadel, B. (1980).
 -  Studien am Wasserfrosch - Rana perezi (Seoane, 1885) - der Balearen  (Amphibia, Anura, Ranidae).
 Boll. Soc. Hist. Nat. Balears,  24, 55-70.
 - Hemmer, H., Konrad, A., & Bachmann, K. (1980).
 -  Hybridization within the Rana ridibunda complex of North Africa.
 Amphibia-Reptilia,  1 (1), 41-48.
 - Heppich, S. (1978).
 -  Hybridogensis in Rana esculenta: C-band karyotypes of Rana ridibunda,  Rana lessonae and Rana esculenta.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  16, 27-39.
 - Heppich, S. & Tunner, H. G. (1979).
 -  Chromosomal constitution and C-banding in homotypic Rana esculenta  crosses.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 111-114 + plate II.
 - Heppich, S., Tunner, H. G., & Greilhuber, J. (1982).
 -  Premeiotic chromosome doubling after genome elimination during  spermatogenesis of the species hybrid Rana esculenta.
 Theoretical and applied Genetics,  61, 101-104.
 - Herrero, P., de la Torre, J., & Gosálvez, J. (1993).
 -  Chromatin differentiation studies on Rana perezi (Seoane, 1885).
 In: 7th Ordinary General Meeting Societas Europaea  Herpetologica. 15-19 September 1993. Barcelona, Spain. Program and  Abstracts, (Bricall & et al., J., eds) p. 78. Barcelona.
 - Heusser, H. (1971).
 -  Differenzierendes Kaulquappenfressen durch Molche.
 Experientia,  27, 475-476.
 - Heusser, H. & Blankenhorn, H. J. (1973).
 -  Crowding-Experimente mit Kaulquappen aus homo- und heterotypischen  Kreuzungen der Phänotypen esculenta, lessonae und ridibunda (Rana  esculenta-Komplex, Anura, Amphibia).
 Revue suisse de Zoologie,  80 (2), 543-569.
 - Heym, W.-D. (1974).
 -  Studien zur Verbreitung, Ökologie und Ethologie der  Grünfrösche in der mittleren und nördlichen Niederlausitz.
 Mitteilungen aus dem zoologischen Museum in Berlin,  50  (2), 263-285 + Tafeln III-VI.
 - Hodar, J. A., Ruiz, I., & Camacho, I. (1990).
 -  The feeding of the common frog (Rana perezi Seoane, 1885) in the  southeast of the Iberian Peninsula.
 Misc. Zool. 14, 145-153.
 - Horat, P. & Semlitsch, R. D. (1994).
 -  Effects of predation risk and hunger on the behaviour of two species  of tadpoles.
 Behavioral Ecology and Sociobiology,  34, 393-401.
 - Hotz, H. (1974a).
 -  Biometrische Untersuchungen an europäischen  Grünfroschpopulationen des Rana esculenta-Komplexes (Amphibia,  Salientia).
 Diploma thesis Universität Zürich.
 - Hotz, H. (1974b).
 -  Ein Problem aus vielen Fragen - europäische Grünfrösche  (Rana esculenta-Komplex) und ihre Verbreitung.
 Natur und Museum,  104 (9), 262-272.
 - Hotz, H. (1983).
 -  Genic diversity among water frog genomes inherited with and  without recombination.
 Ph.D. dissertation Universität Zürich.
 - Hotz, H. & Beerli, P. (1989).
 -  Sources of clonal diversity in a system of hemiclonal Rana hybrids.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [149]. University of Kent Canterbury.
 - Hotz, H., Beerli, P., Guex, G.-D., Semlitsch, R. D., & Uzzell, T. (1994).
 -  Clonal diversity and hybrid frequency are not correlated in water  frogs: is the Frozen Niche Variation model wrong?
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 513-514. Zoologica Poloniae 39.
 - Hotz, H., Beerli, P., & Spolsky, C. (1992).
 -  Mitochondrial DNA reveals formation of nonhybrid frogs by natural  matings between hemiclonal hybrids.
 Molecular Biology and Evolution,  9 (4), 610-620.
 - Hotz, H., Berger, L., Uzzell, T., Tunner, H. G., Beerli, P., & Guex, G.-D.  (1993).
 -  Sex determination, sex linkage, and two kinds of unisexuality among  XX and XY genotypes in western Palearctic water frogs.
 In: Evolution 93. Fourth Congress of the European Society for  Evolutionary Biology, (Catzeflis & et al., F. M., eds) p. 181.  Université Montpellier II.
 - Hotz, H. & Bruno, S. (1980).
 -  Il problema delle rane verdi e l'Italia (Amphibia, Salientia).
 Rendiconti Accademia nazionale delle Scienze detta dei XL,  Memorie di Scienze fisiche e naturali,,  98 ((4)(6)), 49-112.
 - Hotz, H., Mancino, G., Bucci-Innocenti, S., Ragghianti, M., Berger, L., &  Uzzell, T. (1985).
 -  Rana ridibunda varies geographically in inducing clonal gametogenesis  in interspecies hybrids.
 Journal of experimental Zoology,  236 (2), 199-210.
 - Hotz, H., Semlitsch, R. D., Schmiedehausen, S., Beerli, P., & Guex, G.-D.  (1993).
 -  Differential performance of LDH-B genotypes in water frog tadpoles.
 In: Evolution 93. Fourth Congress of the European Society for  Evolutionary Biology, (Catzeflis & et al., F. M., eds) p. 182.  Université Montpellier II.
 - Hotz, H. & Uzzell, T. (1982).
 -  Biochemically detected sympatry of two water frog species: two  different cases in the Adriatic Balkans (Amphibia, Ranidae).
 Proceedings of the Academy of Natural Sciences of Philadelphia,   134, 50-79.
 - Hotz, H. & Uzzell, T. (1983).
 -  Interspecific hybrids of Rana ridibunda without germ line exclusion  of a parental genome.
 Experientia,  39 (5), 538-540.
 - Hotz, H. & Uzzell, T. (1986).
 -  Nonspecific staining of the enzyme creatine kinase in amphibian  skeletal muscle.
 Isozyme Bulletin,  19, 49-50.
 - Hotz, H., Uzzell, T., Beerli, P., & Guex, G.-D. (1996).
 -  Are hybrid clonals species? A case for enlightened anarchy.
 Amphibia-Reptilia,  17 (4), 315-320.
 - Hotz, H., Uzzell, T., & Berger, L. (1993).
 -  Evolutionarily conserved linkage groups in western Palearctic water  frogs.
 In: Evolution 93. Fourth Congress of the European Society for  Evolutionary Biology, (Catzeflis & et al., F. M., eds) p. 183.  Université Montpellier II.
 - Hotz, H., Uzzell, T., & Berger, L. (1994).
 -  Hemiclonal hybrid water frogs associated with the sexual host species  Rana perezi.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 243-266. Zoologica Poloniae 39.
 - Hotz, H., Uzzell, T., & Berger, L. (1997).
 -  Linkage groups of protein-coding genes in western Palearctic water  frogs reveal extensive evolutionary conservation.
 Genetics,  147 (1), 255-270.
 - Hotz, H., Uzzell, T., Günther, R., Tunner, H. G., & Heppich, S. (1987).
 -  Rana shqiperica, a new European water frog species from the Adriatic  Balkans (Amphibia, Salientia, Ranidae).
 Notulae Naturae, Academy of Natural Sciences of Philadelphia,,   (468), 1-3.
 - Hubl, L. & Schneider, H. (1979).
 -  Temperature and auditory thresholds: bioacoustic studies of the frogs  Rana r. ridibunda, Hyla a. arborea and Hyla a. savignyi (Anura, Amphibia).
 Journal of Comparative Physiology,  130 (1), 17-27.
 - Ildos, A. S. & Ancona, N. (1994).
 -  Analysis of amphibian habitat preferences in a farmland area (Po  plain, northern Italy).
 Amphibia-Reptilia,  15, 307-316.
 - Joermann, G. (1988).
 -  Masked thresholds of auditory midbrain neurons in the frog Rana  ridibunda.
 Hearing Research,  35, 191-200.
 - Joermann, G., Baran, I., & Schneider, H. (1988).
 -  The mating call of Rana ridibunda (Amphibia: Anura) in western  Turkey: bioacoustic analysis and taxonomic consequences.
 Zoologischer Anzeiger,  220 (5/6), 225-232.
 - Joermann, G. & Schneider, H. (1986).
 -  The influence of white noise on the auditory evoked potential in the  midbrain of the frog Rana ridibunda.
 Zoologische Jahrbücher (Physiologie),  90, 329-338.
 - Joly, P. (1992).
 -  The amphibian fauna of the French Upper-Rhône floodplain. The  Lavours marsh and the Jons sector.
 Alytes,  10 (4), 117-129.
 - Joly, P. & Morand, A. (1994).
 -  Theoretical habitat templets, species traits, and species richness:  amphibians in the Upper Rhône river and its floodplain.
 Freshwater Biol. 31, 455-468.
 - Joly, P., Pagano, A., & Morand, A. (1994).
 -  Biometrical investigations of water frogs in an alluvial valley and a  plateau in eastern France.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 493-499. Zoologica Poloniae 39.
 - Juarranz, A. & Patón, D. (1990).
 -  The use of acridine orange for age-determination of Rana perezi based  on annual rings in phalanges.
 Amphibia-Reptilia,  11 (2), 193-196.
 - Juarranz, A., Patón, D., & Morales, A. (1989).
 -  The use of acridine orange as direct stain for age-determination of  Rana perezi (Amphibia; Anura) based on annual rings in phalanges.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [160]. University of Kent Canterbury.
 - Juszczyk, W. (1951).
 -  The migrations of the aquatic frog Rana esculenta L.
 Bull. Acad. Pol. Sc. Lett. B 2, 341-369.
 - Juszczyk, W. (1971).
 -  The morphometric structure of populations of green frogs from  southern Poland.
 Acta biologica cracoviensia (Series Zoologia),  14 (2),  197-209 + plates 15-17.
 - Kaehli, H. (1992).
 -  Habitat selection and species recognition in tadpoles of the  waterfrogs Rana esculenta and Rana lessonae.
 Diploma thesis Universität Zürich.
 - Karaman, S. (1948).
 -  Prilog herpetologiji sjeverne Srbije.
 Prirodoslovna Istrazivanja,  24, 51-74.
 - Kashiwagi, A. (1994).
 -  Phylogenetic relationships of the Rana esculenta group clarified by  electrophoretic analyses of serum transferrins.
 Scientific Report of the Laboratory for amphibian Biology  Hiroshima University,  13 (9), 241-249.
 - Kauri, H. (1957).
 -  Über die geographische Variabilität einiger Merkmale bei R.  esculenta L.
 Annales Societatis Tartuensis ad res naturae investigandas  constitutae, Ser. Nova,,  1, 148-151.
 - Kauri, H. (1959).
 -  Die Rassenbildung bei europäischen Rana-Arten und die  Gültigkeit der Klimaregeln.
 Annales Societatis Tartuensis ad Res Naturae Investigandas  Constitutae (Ser. nov.), Lund,,  2, 1-172.
 - Kawamura, T. & Nishioka, M. (1975).
 -  On the pond frogs in the Palearctic region, with special reference to  the isolating mechanisms between different species.
 Proc. Japan. Soc. Syst. Zool. (11), 61-78.
 - Kawamura, T. & Nishioka, M. (1979).
 -  Isolating mechanisms among the water frog species distributed in the  Palearctic region.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 171-185 + plates VII-XII.
 - Kawamura, T. & Nishioka, M. (1986).
 -  Hybridization experiments among Rana lessonae, Rana ridibunda and  Rana esculenta, with special reference to hybridogenesis.
 Scientific Report of the Laboratory for amphibian Biology  Hiroshima University,  8 (7), 117-271.
 - Kawamura, T., Nishioka, M., & Kuramoto, M. (1972).
 -  Interspecific hybrids between Japanese and European pond frogs.
 Scientific Report of the Laboratory for amphibian Biology  Hiroshima University,  1 (6), 277-301 + Pl. I-II.
 - Kireev, V. A. (1977).
 -  Zimovka ozernoj ljaguski Rana ridibunda Pallas v norach pescanki  [Hibernation of the marsh frog Rana ridibunda Pallas in gerbille burrows].
 In: Gerpetologiceskij sbornik [Herpetological collected  papers], (Anan'eva, B., N., Borkin, J., L., Darevskij, I., & S., ., eds)  pp. 64-65. Trudy Zoologiceskogo Instituta, Akademia Nauk SSSR, 74.
 - Klewen, R. (1988).
 -  Verbreitung und Ökologie der Wasserfrösche in  Nordrhein-Westfalen und ihre Bestandssituation im Ballungsraum  Duisburg/Oberhausen.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 73-96. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Klöckner, P. (1982).
 -  Beiträge zur Fortpflanzungsbiologie einheimischer  Grünfrösche der Gattung Rana (Amphibia: Ranidae).
 Braunschw. Naturk. Schr. 1 (3), 341-366.
 - Knudsen, K. & Scheel, J. J. (1975).
 -  Contribution to the systematics of European green frogs.
 Bulletin de la Société zoologique de France,  100  (4), 677-679.
 - Kordges, T. (1988a).
 -  Beobachtungen am Epirusfrosch (Rana epeirotica), dem neuen  griechischen Wasserfrosch.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 135-143. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Kordges, T. (1988b).
 -  Zur Wasserfroschproblematik in Ballungsräumen - eine Essener  Fallstudie.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 97-104. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Koref-Santibañez, S. (1979).
 -  The karyotypes of Rana lessonae Camerano, Rana ridibunda Pallas and  of the hybrid form Rana "esculenta" Linné (Anura).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 115-124 + plates III-IV.
 - Koref-Santibañez, S. & Günther, R. (1980).
 -  Karyological and serological studies in Rana lessonae, R. ridibunda  and in their hybrid R. 'esculenta' (Amphibia, Anura).
 Genetica,  52/53, 195-207.
 - Kotlík, P. & Sulová, K. (1994).
 -  Syntopic occurrence of three taxa of water frogs in Czech Republic.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 417-424. Zoologica Poloniae 39.
 - Kovács, T. & Török, J. (1995).
 -  Dietary responses by edible frog (Rana esculenta complex) to wetland  habitat change in Hungary.
 In: Wetlands, biodiversity and development. Proceedings of  Workshop 2 of the International Conference on Wetlands and Development, Kuala  Lumpur, Malaysia, 9-13 October 1995, (Giesen, W., ed) pp. 79-86.
 - Kuhn, B. & Schneider, H. (1984).
 -  Mating and territorial calls of the frog Rana ridibunda and their  temperature-dependent variability.
 Zoologischer Anzeiger,  212 (5/6), 273-305.
 - Kux, Z. (1975).
 -  Príspevek k rozsírení druhu Rana lessonae Cam., Rana  esculenta L. a Rana ridibunda Pall. v CSSR s nekolika taxonomickymi  poznámkami [Zur Frage der Verbreitung und Taxonomie der Arten Rana  lessonae Cam., Rana esculenta L. und Rana ridibunda Pall. in der CSSR].
 Casopis Moravského Musea (Vedy prírodní) [Acta Musei  Moraviae (Scientiae naturales)],  60, 161-184 + 1 map.
 - Kuzmin, S. L. (1994).
 -  The problem of declining amphibian populations in the Commonwealth of  Independent States and adjacent territories.
 Alytes,  12 (3), 123-134.
 - Kyriakopoulou-Sklavounou, P. (1980).
 -  Plasma albumin patterns of the species Rana ridibunda in Greece.
 Experientia,  36 (10), 1171-1172.
 - Kyriakopoulou-Sklavounou, P. (1992).
 -  Everything that we know about the water frog Rana ridibunda P. from  Greece.
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 281-283.
 - Kyriakopoulou-Sklavounou, P. & Kattoulas, M. E. (1990).
 -  Contribution to the reproductive biology of Rana ridibunda Pallas  (Anura, Ranidae).
 Amphibia-Reptilia,  11, 23-30.
 - Kyriakopoulou-Sklavounou, P. & Loumbourdis, N. (1990).
 -  Annual ovarian cycle in the frog, Rana ridibunda, in northern Greece.
 Journal of Herpetology,  24 (2), 185-191.
 - Lác, J. (1959a).
 -  Príspevok k systematike, rozsireniu a k bionómii skokanov  Rana ridibunda Pall. a Rana esculenta L. na Slovensku. I.
 Biológia (Bratislava),  14 (9), 665-673.
 - Lác, J. (1959b).
 -  Príspevok k systematike, rozsireniu a k bionómii skokanov  Rana ridibunda Pall. a Rana esculenta L. na Slovensku. II.
 Biológia (Bratislava),  14 (12), 896-912.
 - Lada, G. A., Borkin, L. J., & Vinogradov, A. E. (1995).
 -  Distribution, population systems and reproductive behavior of green  frogs (hybridogenetic Rana esculenta complex) in the central Chernozem  territory of Russia.
 Russian Journal of Herpetology,  2 (1), 46-57.
 - Lizana, M., Márquez, R., Martín-Sánchez, R., Ciudad, J., López,  A., & Orfao, A. (1993).
 -  DNA content/cell of Rana perezi in the Iberian Peninsula as analyzed  by flow cytometry.
 In: 7th Ordinary General Meeting Societas Europaea  Herpetologica. 15-19 September 1993. Barcelona, Spain. Program and  Abstracts, (Bricall & et al., J., eds) p. 93. Barcelona.
 - Lizana, M., Mellado, V. P., & Ciudad, M. J. (1987).
 -  Biometry and relation with the ecology of Rana iberica and Rana  perezi in the Sistema Central (Spain).
 In: Proceedings of the 4th Ordinary General Meeting of the  Societas Europaea Herpetologica, (Gelder, van, J. J., Strijbosch, H.,  Bergers, & M., P. J., eds) pp. 253-258. Faculty of Sciences Nijmegen.
 - Low, P., Sass, M., Csörgo, T., & Török, J. (1989).
 -  Biochemical investigation of the Rana esculenta complex in the  Kis-Balaton Nature Reserve, Hungary.
 Acta Biologica Hungarica,  40 (1-2), 137-144.
 - Lutschinger, G. (1988).
 -  Zur Überwinterung der Wasserfrösche in den Donau- und  Marchauen (Ostösterreich).
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 153-160. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Mancino, G., Ragghianti, M., Bucci, S., Berger, L., Hotz, H., & Uzzell, T.  (1985).
 -  Rana esculenta complex: un modello per studi citogeografici?
 Atti Soc. Toscana Sci. Nat. Mem. (B) 92, 259-266.
 - Martínez, I. P., Alvarez, R., & Herraez, M. P. (1996).
 -  Growth and metamorphosis of Rana perezi larvae in culture: effects of  larval density.
 Aquaculture,  142 (3-4), 163-170.
 - Martínez, I. P., Herraez, M. P., & Alvarez, R. (1993a).
 -  Optimal level of dietary protein for Rana perezi Seoane larvae.
 Aquacult. Fish. Manage. 24 (3), 271-278.
 - Martínez, I. P., Herraez, M. P., & Alvarez, R. (1993b).
 -  Response of hatchery reared Rana perezi larvae fed different diets.
 In: 7th Ordinary General Meeting Societas Europaea  Herpetologica. 15-19 September 1993. Barcelona, Spain. Program and  Abstracts, (Bricall, J. & et al., eds) p. 98. Barcelona.
 - Martínez, I. P., Herraez, M. P., & Alvarez, R. (1994).
 -  Response of hatchery-reared Rana perezi larvae fed different diets.
 Aquaculture,  128 (3-4), 235-244.
 - Martínez, I. P., Herraez, M. P., Dominguez, M. C., & Alvarez, R. (1993).
 -  Nutritional use of diets by Rana perezi Seoane larvae.
 Aquacult. Fish. Manage. 24 (4), 507-516.
 - Mazin, A. L. & Borkin, L. J. (1979).
 -  Nuclear DNA content in green frogs of the genus Rana.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 217-224.
 - Mertens, R. & Wermuth, H. (1960).
 -  Die Amphibien und Reptilien Europas (Dritte Liste, nach dem  Stand vom 1. Januar 1960).
 Frankfurt am Main: Senckenberg-Buch 38. W. Kramer.
 - Meyer, F. & Grosse, W.-R. (1997).
 -  Nachweis von Albinismus bei Rana kl. esculenta L. (Amphibia:  Ranidae).
 Salamandra,  33 (1), 75-78.
 - Mezhzherin, S. V. (1992).
 -  Novyj vid zelenych ljagusek Rana terentievi sp. nova (Amphibia,  Ranidae) iz juznogo Tadzikistana [A new species of green frogs Rana  terentievi sp. nova (Amphibia, Ranidae) from South Tadjikistan].
 Doklady Akademii Nauk Ukrainy,  1992 (5), 154-157.
 - Mezhzherin, S. V. (1997).
 -  Genetic differentiation and species identity of the marsh frog, Rana  ridibunda Pall. (Amphibia, Ranidae) from Eastern Kazakhstan.
 Zoological Zhurnal,  76 (8), 933-939.
 - Mezhzherin, S. V. (1998).
 -  Allozyme variation character of the lactate dehydrogenase (E.C.  1.1.1.27) in vertebrate animals.
 Russ. J. Genet. (in press),  .
 - Mezhzherin, S. V. & Leonov, S. Y. M. (1997).
 -  Gene introgression in hybrid populations of green frogs of Rana  esculenta L., 1758 complex (Amphibia, Ranidae) from the Dnepr basin.
 Genetika,  33 (3), 358-364.
 - Mezhzherin, S. V. & Morozov-Leonov, S. J. (1992).
 -  Aberrantnye fenotipy lokusa Ldh-B v gibridnych populjacijach Rana  esculenta complex (Amphibia, Ranidae).
 Doklady Akademii Nauk,  324 (6), 1314-1317.
 - Mezhzherin, S. V. & Morozov-Leonov, S. J. (1993).
 -  Populjacionno-geneticeskij analiz struktury gibridnych populjacij  Rana esculenta L. complex (Amphibia, Ranidae) [Population-genetic analysis of  the structure of hybrid populations of the Rana esculenta L. complex  (Amphibia, Ranidae)].
 Citologija i Genetika (Kiev),  27 (2), 63-68 + Plate.
 - Mezhzherin, S. V. & Morozov-Leonov, S. J. (1994).
 -  Geneticeskije defekty pri nasledovanii i izmencivost' lukusa Ldh-B v  gibridnych populjacijach Rana esculenta complex (Amphibia, Ranidae) [Genetic  defects upon inheritance and the Ldh-B locus variability in hybrid  populations of Rana esculenta complex (Amphibia Ranidae)].
 Izvestija Akademii Nauk Serija Biologiceskaja (Moskva),  5, 779-787.
 - Mezhzherin, S. V. & Morozov-Leonov, S. Y. (1996).
 -  Genetical analysis of hybrid population structure of green frog  complex Rana esculenta L. (Amphibia, Ranidae) from Vohlin'.
 Tsitologija i Genetika,  30 (1), 48-53.
 - Mezhzherin, S. V., Morozov-Leonov, S. Y., & Piontkovskaya, E. A. (1997).
 -  Allozyme variability of endemic species of amphibians in the eastern  Carpathians.
 In: Biological Diversity of Carpathian Reserve, (????, ed) pp.  352-367. Kiev.
 - Mezhzherin, S. V. & Peskov, V. N. (1992a).
 -  Biochemical variability and genetic differentiation of populations of  the marsh frog Rana ridibunda Pall.
 Citologija i genetika (Kiev),  26 (1), 43-48.
 - Mezhzherin, S. V. & Peskov, V. N. (1992b).
 -  Biochimiceskaja izmencivost' i geneticeskaja differenciacija  populjacij ozernoj ljaguski Rana ridibunda Pall. [Biochemical variability and  genetic differentiation of populations of the marsh frog Rana ridibunda  Pall.].
 Citologija i Genetika (Kiev),  26 (1), 43-48.
 - Milinski, M. (1994).
 -  Hybridogenetic frogs on an evolutionary dead end road.
 Trends in Ecology & Evolution,  9 (2), 62.
 - Misjura, A. N., Cernysenko, S. V., & Varenko, N. I. (1990).
 -  Sochranenie i ispol'zovanie populjacij ozernoj ljaguski v uslovijach  vlijanija na ekosistemy promyslennych stocnych vod.
 In: Zookul'tura amfibij, (Syroeckovskij, E., E., Salomatina, &  I., N., eds) pp. 112-119. Akademia Nauk SSSR Moskva.
 - Miura, I., Ohtani, H., Nakamura, M., & Saitoh, K. (1997).
 -  Fluorescence replication banding of frog chromosomes.
 Cellular and Molecular Life Sciences,  53 (1), 73-77.
 - Monnerot, M., Dubois, A., & Tunner, H. (1985).
 -  Mitochondrial DNA polymorphism among Rana ridibunda, Rana lessonae  and Rana kl. esculenta: preliminary study.
 Alytes,  4 (3), 101-112.
 - Monnerot, M., Mounolou, J.-C., & Solignac, M. (1984).
 -  Intra-individual length heterogeneity of Rana esculenta mitochondrial  DNA.
 Biology of the Cell,  52, 213-218.
 - Morand, A. & Joly, P. (1995).
 -  Habitat variability and space utilization by the amphibian  communities of the French Upper-Rhone floodplain.
 Hydrobiologia,  300/301, 249-257.
 - Morescalchi, A. (1962).
 -  Osservazioni sul corredo cromosomico di Rana esculenta L.
 Bollettino di Zoologia,  29 (2), 601-608.
 - Morescalchi, A. (1973).
 -  Amphibia.
 In: Cytotaxonomy and vertebrate evolution, (Chiarelli, B., A.,  & Capanna, E., eds) pp. 233-348. Academic Press London.
 - Morescalchi, A. & Filosa, S. (1965).
 -  Osservazioni sui cromosomi piumosi di Rana esculenta L.
 Atti della Società Pelor. Sci. Fis. Mat. Nat. 11 (3),  211-219.
 - Mosansky, A. (1977).
 -  Katalóg suchozemskych stavovcov Vychodoslovenského Muzea v  Kosiciach I. Batrachologické a herpetológické zbierky [Katalog  festländischer Vertebrata des Ostslowakischen Museums in Kosice I.  Batrachologische und herpethologische Sammlungen].
 Zborník Vuchodoslovenského Múzea v Kosiciach,  17 (AB), 55-70.
 - Muhaisen, F. D., Salman, N. A., & Mahdi, A. A. (1986).
 -  On the control of tadpoles in fish farms at Basrah University. 1. The  effect of certain chemicals in controlling tadpoles of Rana ridibunda and the  larvae of Gambusia affinis.
 Kuwait Bull. Mar. Sci. 1986, 133-139.
 - Negovetic, S. (1995).
 -  Effects of food and temperature on development of hemiclonal  hybrid waterfrog tadpoles and their sexual host parental species.
 Diploma thesis Universität Zürich.
 - Neveu, A. (1989).
 -  $$$$.
 In: Atlas de repartition des Amphibiens et Reptiles de France,  (France & de, S. H., eds) pp. 89-91. Paris.
 - Nevo, E. (1976).
 -  Adaptive strategies of genetic systems in constant and varying  environments.
 In: Population genetics and ecology, (Karlin, S. & Nevo, E.,  eds) pp. 141-158. Academic Press New York, San Francisco and London.
 - Nevo, E. & Filippucci, M. G. (1988).
 -  Genetic differentiation between Israeli and Greek populations of the  marsh frog, Rana ridibunda.
 Zoologischer Anzeiger,  221 (5/6), 418-424.
 - Nevo, E. & Schneider, H. (1983).
 -  Structure and variation of Rana ridibunda mating call in Israel  (Amphibia: Anura).
 Israel Journal of Zoology,  32 (1), 45-60.
 - Nevo, E. & Yang, S. Y. (1979).
 -  Genetic structure and variation of marsh frog populations in Israel.
 Israel Journal of Zoology,  28, 55.
 - Nevo, E. & Yang, S. Y. (1982).
 -  Genetic diversity and ecological relationships of marsh frog  populations in Israel.
 Theoretical and applied Genetics,  63, 317-330.
 - Nishioka, M. & Ohtani, H. (1984).
 -  Hybridogenetic reproduction of allotriploids between Japanese and  European pond frogs.
 Zoological Science (Tokyo),  1 (2), 291-316.
 - Nishioka, M., Okumoto, H., & Ryuzaki, M. (1987).
 -  A comparative study on the karyotypes of pond frogs distributed in  Japan, Korea, Taiwan, Europe and North America.
 Scientific Report of the Laboratory for amphibian Biology  Hiroshima University,  9 (4), 135-163.
 - Nishioka, M. & Sumida, M. (1992).
 -  Biochemical differentiation of pond frogs distributed in the  Palearctic region.
 Scientific Report of the Laboratory for amphibian Biology  Hiroshima University,  11 (2), 71-108.
 - Nopp, H. & Tunner, H. (1985).
 -  Zur Sauerstoffbindung des Blutes von Rana ridibunda Pall., Rana  lessonae Cam. und Rana esculenta L. (Ranidae, Anura) bei normaler und  erniedrigter Sauerstoffspannung.
 Sitzungsberichte der Österreichischen Akademie der  Wissenschaften, mathematisch-naturwissenschaftliche Klasse,,  (I) 194  (1-5), 125-130.
 - Oeldorf, E., Nishioka, M., & Bachmann, K. (1978).
 -  Nuclear DNA amounts and developmental rate in Holarctic Anura.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  16 (3), 216-224.
 - Ogielska, M. (1990).
 -  The fate of intramitochondrial paracrystalline inclusion bodies in  germ line cells of water frogs (Amphibia, Anura).
 Experientia,  46, 98-101.
 - Ogielska, M. (1991).
 -  Abnormal eye development in the progeny of the natural hybridogenetic  frog Rana esculenta L. (Amphibia, Anura).
 Zoologischer Anzeiger,  226 (3/4), 174-184.
 - Ogielska, M. (1994a).
 -  Diploid-triploid, predominantly male pure Rana esculenta population  in Wroclae-Nowy Dom.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 501-502. Zoologica Poloniae 39.
 - Ogielska, M. (1994b).
 -  Nucleus-like bodies in gonial cells of Rana esculenta (Amphibia,  Anura) tadpoles - a putative way of chromosome elimination.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 461-474. Zoologica Poloniae 39.
 - Ogielska, M. (1994c).
 -  Rana esculenta developmental syndrome: fates of abnormal embryos from  the first cleavage until spontaneous death.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 447-459. Zoologica Poloniae 39.
 - Ogielska, M. & Jurgowiak, L. (1994).
 -  Exogastrulation in the progeny of water frog, Rana esculenta L.  (Amphibia, Anura).
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 475-484. Zoologica Poloniae 39.
 - Ogielska, M. & Wagner, E. (1990).
 -  Oogenesis and development of the ovary in European green frog, Rana  ridibunda (Pallas). I. Tadpole stages until metamorphosis.
 Zoologische Jahrbücher (Anatomie),  120 (3),  211-221.
 - Ogielska, M. & Wagner, E. (1993).
 -  Oogenesis and ovary development in the natural hybridogenetic water  frog, Rana esculenta L. I. Tadpole stages until metamorphosis.
 Zoologische Jahrbücher (Physiologie),  97 (4),  349-368.
 - Ogielska, M., Zubek, M., & Wysocka, B. (1994).
 -  Biometrical studies of water frogs in fish ponds in Ruda Milicka.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 485-491. Zoologica Poloniae 39.
 - Ogielska-Nowak, M. (1985).
 -  Stages of normal and spontaneous abnormal development of the natural  hybrid, Rana esculenta L. (Amphibia, Anura).
 Zoologica Poloniae,  32 (1-2), 37-62 + Plates I-II.
 - Ohler, A. (1988).
 -  Developmental rate of Rana synkl. esculenta (Ranidae, Anura) embryos  from different crosses: consequences on the evolution of the populations.
 Alytes,  7 (3), 115-123.
 - Ohtani, H. (1993).
 -  Mechanism of chromosome elimination in the hybridogenetic  spermatogenesis of allotriploid males between Japanese and European water  frogs.
 Chromosoma,  102, 158-162.
 - Ohtani, H., Miura, I., Kondo, Y., & Uchibori, M. (1997).
 -  Amphidiploidy recovers the viability of hybrids of European and East  Asian water frogs.
 Journal of Experimental Zoology,  279 (2), 113-117.
 - Ol'svang, V. N. (1990).
 -  Troficeskie svjazi ozernoj ljaguski Rana ridibunda Pall. v  kolchidskoj nizmennosti.
 In: Zookul'tura amfibij, (Syroeckovskij, E., E., Salomatina, &  I., N., eds) pp. 47-50. Akademia Nauk SSSR Moskva.
 - Oosterbroek, P. & Arntzen, J. W. (1992).
 -  Area-cladograms of circum-Mediterranean taxa in relation to  Mediterranean palaeogeography.
 Journal of Biogeography,  19 (1), 3-20.
 - Pagano, A., Joly, P., & Hotz, H. (1997).
 -  Taxon composition and genetic variation of water frogs in the  mid-Rhône floodplain.
 Comptes rendus de l'Académie des Sciences, Paris,,  320, 759-766.
 - Panara, F., Angiolillo, A., & Pascolini, R. (1989).
 -  Acid phosphatases from liver of Rana esculenta. Subcellular  localization and partial characterization of multiple forms.
 Comp. Biochem. Physiol. 93 B (4), 877-882.
 - Paolucci, M., Borriello, M., Botte, V., Zerani, M., & Magni, A. P. (1987).
 -  Taxonomic investigations on six populations of the water frog, Rana  esculenta complex from peninsular Italy and Sicily.
 Bollettino di Zoologia,  54 (4), 341-346.
 - Paris, M. G. (1985).
 -  Los anfibios de España.
 Madrid: Publicaciones de Extension Agraria.
 - Patón, D., Juarranz, A., Sequeros, E., Pérez-Campo, R.,  López-Torres, M., & de Quiroga, G. B. (1991).
 -  Seasonal age and sex structure of Rana perezi assessed by  skeletochronology.
 Journal of Herpetology,  25 (4), 389-394.
 - Pavignano, I. & Giacoma, C. (1989).
 -  Microhabitat selection in tadpole communities in northern Italy  temporary ponds.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [228]. University of Kent Canterbury.
 - Peckmann, P. & Klingel, H. (1988).
 -  Untersuchungen an Amphibien in einem Teichgebiet in  Ost-Niedersachsen.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 67-72. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Pelaz, M. P. (1990).
 -  The biological klepton concept (BKC).
 Alytes,  8 (3-4), 75-89.
 - Pelaz, M. P. (1992).
 -  Cytogenetics of gametogenesis during development of natural  hybridogenetic water frogs: meiosis, ameiosis, and evolutionary rules.
 Biologia del Desenvolupament, Societat Catalana de Biologia,,   10, 115-124.
 - Pelaz, M. P. (1994a).
 -  Modes of gametogenesis among kleptons of the hybridogenetic water  frog complex: an evolutionary synthesis.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 123-138. Zoologica Poloniae 39.
 - Pelaz, M. P. (1994b).
 -  Natural ameiosis in unisexual all-male allotriploids of Rana kl.  esculenta.
 Ph.D. dissertation Universitat de Barcelona.
 - Pelaz, M. P. & Graf, J.-D. (1988).
 -  Erythrocyte size as an indicator of ploidy level in Rana kl.  esculenta before and after the metamorphosis.
 Alytes,  7 (2), 53-61.
 - Pelaz, M. P. & Graf, J.-D. (1989).
 -  Triploid all-male genealogies in a Rana lessonae - Rana kl. esculenta  hybridogenetic population.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [236]. University of Kent Canterbury.
 - Pelaz, M. P. & Rougier, C. (1990).
 -  A comparative study of buccal volumes and the branchial skeleton of  Rana ridibunda and R. dalmatina tadpoles.
 Copeia,  1990 (3), 658-665.
 - Petrochenko, V. I. (1990).
 -  Herpetofauna of the Khortitsa Island (Dnieper).
 Vestn. Zool. 1990 (6), 78-80.
 - Petroni, G. (1997).
 -  Indagine di citogenetica molecolare sui meccanismi riproduttivi  e l'evoluzione nel "Rana esculenta complex".
 Laurea thesis Università degli Studi di Pisa.
 - Plötner, J., Becker, C., & Plötner, K. (1994).
 -  Morphometric and DNA investigations into European water frogs (Rana  kl. esculenta synklepton (Anura, Ranidae)) from different population systems.
 Journal of Zoological Systematics and Evolutionary Research,   32 (3), 193-210.
 - Plötner, J. & Grunwald, C. (1991).
 -  A mathematical model of the structure and the dynamics of Rana  ridibunda/esculenta-??-populations (Anura, Ranidae).
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  29, 201-207.
 - Plötner, J., Günther, R., & Schade, R. (1988).
 -  Immunologische Untersuchungen zur Verwandtschaft zwischen den  mitteleuropäischen Wasserfröschen des Rana kl. esculenta Synkleptons  (Amphibia, Anura) und anderen Anuren-Taxa.
 Mitteilungen aus dem zoologischen Museum in Berlin,  64  (2), 323-330.
 - Plötner, J. & Klinkhardt, M. (1992).
 -  Investigations on the genetic structure and the morphometry of a pure  hybrid population of Rana kl. esculenta (Anura, Ranidae) in North Germany.
 Zoologischer Anzeiger,  229, 163-184.
 - Polls, M. & Borrás, A. (1987).
 -  Los anfibios del Prepirineo oriental (Cadí-Moixeró y la  Cerdaña).
 Misc. Zool. 11, 289-298.
 - Polls, M. & Thiébaud, C. (1993).
 -  Preliminary results of experimental androgenesis among hybridogenetic  water frogs.
 In: 7th Ordinary General Meeting Societas Europaea  Herpetologica. 15-19 September 1993. Barcelona, Spain. Program and  Abstracts, (Bricall & et al., J., eds) p. 108. Barcelona.
 - Radwan, N. M. M. & Schneider, H. (1988).
 -  Social behaviour, call repertory and variation in the calls of the  pool frog, Rana lessonae (Anura: Ranidae).
 Amphibia-Reptilia,  9 (4), 329-351.
 - Ragghianti, M., Guerrini, F., Bucci, S., Mancino, G., Hotz, H., Uzzell, T., &  Guex, G.-D. (1995).
 -  Molecular characterization of a centromeric satellite DNA in the  hemiclonal hybrid frog Rana esculenta and its parental species.
 Chromosome Research,  3 (8), 497-506.
 - Rähmel, C. A. (1981).
 -  [Identification of Rana perezi and Bufo bufo spinosus in S.W. France  (Amphibia: Salientia: Ranidae, Bufonidae)].
 Salamandra,  17 (3-4), 202-203.
 - Rahmel, U. (1988).
 -  Neue Daten zur Verbreitung des Seefrosches (Rana ridibunda Pallas,  1771) in Niedersachsen.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 47-66. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Raicu, P. & Geormaneanu, C. (1977).
 -  Constitutive heterochromatin in Rana ridibunda.
 J. Hered. 68, 343-344.
 - Regnier, V. & Neveu, A. (1986).
 -  Structures spécifiques des peuplements en grenouilles du complexe  Rana esculenta de divers milieux de l'Ouest de la France.
 Acta Oecologica/Oecol. Applic., Montreuil,,  7 (1),  3-26.
 - Renom, P. (1995).
 -  Coloracion anomala en ub individuo de Rana perezi en la Provincia de  Gerona.
 Boletin de la Asociacion Herpetologica Espanola,  (6),  9-10.
 - Repa, P. (1977).
 -  Biometrische Analyse der Grünfrösche aus dem Cesky Les  Gebirge und der Tachovka Brazda Senke (Südwestböhmen).
 Vest. cs. Spolec. zool. 61, 121-134.
 - Rist, L. () . Diploma thesis, U. o. Z. S. (1994).
 -  Differences in feeding behaviour between hemiclonal  hybridogenetic and sexual tadpoles of the European water frogs.
 Diploma thesis Universität Zürich.
 - Rybacki, M. (1994a).
 -  Changes of the body weight in adult and juvenile individuals of Rana  lessonae.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 523-525. Zoologica Poloniae 39.
 - Rybacki, M. (1994b).
 -  Diploid males of Rana esculenta from natural populations in Poland  producing diploid spermatozoa.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 517-518. Zoologica Poloniae 39.
 - Rybacki, M. (1994c).
 -  Pure populations of a hybrid Rana esculenta from the German-Polish  Usedom island.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 519-520. Zoologica Poloniae 39.
 - Rybacki, M. (1994d).
 -  Structure and reproduction of water frog populations, predominantly  RLL triploids, from Wysoka Kamienska, Poland.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 521-522. Zoologica Poloniae 39.
 - Rybacki, M. (1994e).
 -  Structure of water frog populations (Rana esculenta complex) of the  Wolin island, Poland.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 345-364. Zoologica Poloniae 39.
 - Rybacki, M. (1994f).
 -  Water frogs (Rana esculenta complex) of the Bornholm island, Denmark.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 331-334. Zoologica Poloniae 39.
 - Rybacki, M. & Berger, L. (1994).
 -  Distribution and ecology of water frogs in Poland.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 293-303. Zoologica Poloniae 39.
 - Salvador, A. (1985).
 -  Guía de campo de los anfibios y reptiles de la Península  Ibérica, Islas Baleares y Canarias.
 León: A. Salvador.
 - Salvador, A. & Carrascal, L. M. (1990).
 -  Reproductive phenology and temporal patterns of mate access in  Mediterranean anurans.
 Journal of Herpetology,  24 (4), 438-441.
 - Sanchíz, B., Schleich, H. H., & Esteban, M. (1993).
 -  Water frogs (Ranidae) from the Oligocene of Germany.
 Journal of Herpetology,  27 (4), 486-489.
 - Santucci, F., Nascetti, G., & Bullini, L. (1991).
 -  Species subdivision within the green frog Rana lessonae from Italy.
 3rd Congress of Eur. Soc. Evol. Biol., Roma, Abstracts,  , 77.
 - Santucci, F., Nascetti, G., & Bullini, L. (1995).
 -  Genetic structure of the hybridogenetic Rana esculenta from Italy.
 In: Fifth Congress of the European Society for Evolutionary  Biology, (Barton, H., N., Niven, & B., P. S., eds) p. 316. University of  Edinburgh Edinburgh, Scotland.
 - Santucci, F., Nascetti, G., & Bullini, L. (1996).
 -  Hybrid zones between two genetically differentiated forms of the pond  frog Rana lessonae in southern Italy.
 Journal of Evolutionary Biology,  9 (4), 429-450.
 - Schafer, H. J. & Schmidt, U. (1982).
 -  Seasonal changes in retinal function of the frog Rana ridibunda.
 Behav. Processes,  7 (1), 73-79.
 - Schätti, B. & Sigg, H. (1989).
 -  Die Herpetofauna der Insel Zypern. Teil 1: Die herpetologische  Erforschung / Amphibien.
 Herpetofauna,  11 (61), 9-18.
 - Schempp, W. & Schmid, M. (1981).
 -  Chromosome banding in Amphibia. VI. BrdU-replication patterns in  Anura and demonstration of XX/XY sex chromosomes in Rana esculenta.
 Chromosoma,  83, 697-710.
 - Schmid, M. (1978).
 -  Chromosome banding in Amphibia. II. Constitutive heterochromatin and  nucleolus organizer regions in Ranidae, Microhylidae and Rhacophoridae.
 Chromosoma,  68 (2), 131-148.
 - Schmidt, B. R. (1993).
 -  Are hybridogenetic frogs cyclical parthenogens?
 Trends Ecol. Evol. 8 (8), 271-273.
 - Schmidt, B. R. (1994).
 -  Reply from B. Schmidt.
 Trends in Ecology & Evolution,  9 (2), 62.
 - Schmidt, B. R. (1995).
 -  On the maintenance of the genetic polymorphism at the locus  LDH-B in the pool frog, Rana lessonae.
 Diploma thesis Universität Basel.
 - Schmidt, B. R. (1996).
 -  Sexual and asexual reproduction in vertebrates.
 Trends in Ecology & Evolution,  11 (6), 253-254.
 - Schneider, H. (1982a).
 -  Rana ridibunda (Ranidae) - Rufe.
 Publikationen zu wissenschaftlichen Filmen, Sektion Biologie,,   15 (5), 1-8.
 - Schneider, H. (1982b).
 -  Rana lessonae (Ranidae) - Rufe.
 Publikationen zu wissenschaftlichen Filmen, Sektion Biologie,,   15 (4), 1-7.
 - Schneider, H. (1990).
 -  Reproductive behavior and biology of central European water frogs.
 In: Biology and physiology of amphibians, (Hauke, W., ed)  volume 38 pp. 29-39. Gustav Fischer, Fortschritte der Zoologie Stuttgart and  New York.
 - Schneider, H. & Brzoska, J. (1981).
 -  Die Befreiungsrufe der mitteleuropäischen Wasserfrösche.
 Zoologischer Anzeiger,  206 (3/4), 189-202.
 - Schneider, H. & Egiasarjan, E. M. (1991).
 -  The structure of the calls of lake frogs (Rana ridibunda: Amphibia)  in the terra typica restricta.
 Zoologischer Anzeiger,  227 (3/4), 121-135.
 - Schneider, H. & Haxhiu, I. (1992).
 -  The distribution of the Epeirus frog (Rana epeirotica) in Albania.
 Amphibia-Reptilia,  13 (3), 293-295.
 - Schneider, H. & Joermann, G. (1988).
 -  Mating calls of water frogs (Ranidae) from Lake Skutari, Yugoslavia,  and the relationship to water frogs of other regions.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  26 (4), 261-275.
 - Schneider, H. & Sinsch, U. (1992).
 -  Mating call variation in lake frogs referred to as Rana ridibunda  Pallas, 1771. Taxonomic implications.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  30, 297-315.
 - Schneider, H., Sinsch, U., & Nevo, E. (1992).
 -  The lake frogs in Israel represent a new species.
 Zoologischer Anzeiger,  228 (1/2), 97-106.
 - Schneider, H., Sinsch, U., & Sofianidou, T. S. (1993).
 -  The water frogs of Greece. Bioacoustic evidence for a new species.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  31, 47-63.
 - Schneider, H. & Sofianidou, T. S. (1985).
 -  The mating call of Rana ridibunda (Amphibia, Anura) in northern  Greece as compared with those of Yugoslavian and Israeli populations:  proposal of a new subspecies.
 Zoologischer Anzeiger,  214 (5/6), 309-319.
 - Schneider, H. & Sofianidou, T. S. (1986).
 -  Bioacoustic study of water frogs (Ranidae) in Greece.
 In: Studies in herpetology, (Rocek, Z., ed) pp. 561-564.  Charles Univ. Prague.
 - Schneider, H. & Sofianidou, T. S. (1987).
 -  Hybrid types of water frogs living sympatrically with Rana epeirotica  and Rana ridibunda in Greece.
 In: Proceedings of the 4th Ordinary General Meeting of the  Societas Europaea Herpetologica, (Gelder, van, J. J., Strijbosch, H.,  Bergers, & M., P. J., eds) pp. 347-352. Faculty of Sciences Nijmegen.
 - Schneider, H., Sofianidou, T. S., & Kyriakopoulou-Sklavounou, P. (1984).
 -  Bioacoustic and morphometric studies in water frogs (genus Rana) of  Lake Ioannina in Greece, and description of a new species (Anura, Amphibia).
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  22 (4), 349-366.
 - Schneider, H. & Steinwarz, D. (1990).
 -  Mating calls and territorial calls of the Spanish lake frog, Rana  perezi (Ranidae, Amphibia).
 Zoologischer Anzeiger,  225 (5/6), 265-277.
 - Schneider, H. & Tunner, H. G. (1982).
 -  Struktur des Paarungsrufes und der Revierrufe bei triploiden  Teichfröschen (Rana esculenta) (Amphibia: Salientia: Ranidae).
 Salamandra,  18 (1/2), 1-8.
 - Schneider, H., Tunner, H. G., & Hödl, W. (1979).
 -  Beitrag zur Kenntnis des Paarungsrufes von Rana lessonae Camerano,  1882 (Anura, Amphibia).
 Zoologischer Anzeiger,  202 (1/2), 20-28.
 - Scupak, E. L. & Ivanova, N. L. (1990).
 -  Osobennosti rosta i razvitija licinok ozernoj ljaguski: polevye  nabljudenija i eksperiment.
 In: Zookul'tura amfibij, (Syroeckovskij, E., E., Salomatina, &  I., N., eds) pp. 38-46. Akademia Nauk SSSR Moskva.
 - Semlitsch, R. D. (1993a).
 -  Adaptive genetic variation in growth and development of tadpoles of  the hybridogenetic Rana esculenta complex.
 Evolution,  47 (6), 1805-1818.
 - Semlitsch, R. D. (1993b).
 -  Asymmetric competition in mixed populations of tadpoles of the  hybridogenetic Rana esculenta complex.
 Evolution,  47 (2), 510-519.
 - Semlitsch, R. D. (1993c).
 -  Effects of different predators on the survival and development of  tadpoles from the hybridogenetic Rana esculenta complex.
 Oikos,  67 (1), 40-46.
 - Semlitsch, R. D., Foglia, M., Mueller, A., Steiner, I., Fioramonti, E., &  Fent, K. (1995).
 -  Short-term exposure to triphenyltin affects the swimming and feeding  behavior of tadpoles.
 Environ. Toxicol. Chem. 14, 1419-1423.
 - Semlitsch, R. D., Hotz, H., & Guex, G.-D. (1997).
 -  Competition among tadpoles of coexisting hemiclones of hybridogenetic  Rana esculenta: support for the Frozen Niche Variation model.
 Evolution,  51 (4), 1249-1261.
 - Semlitsch, R. D., Hotz, H., Guex, G.-D., & Beerli, P. (1994).
 -  Balancing interclonal selection and the maintenance of more than one  hemiclone in populations of the hybrid frog Rana esculenta.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 511-512. Zoologica Poloniae 39.
 - Semlitsch, R. D. & Reyer, H.-U. (1992a).
 -  Modification of anti-predator behaviour in tadpoles by environmental  conditioning.
 Journal of Animal Ecology,  61 (2), 353-360.
 - Semlitsch, R. D. & Reyer, H.-U. (1992b).
 -  Performance of tadpoles from the hybridogenetic Rana esculenta  complex: interactions with pond drying and interspecific competition.
 Evolution,  46 (3), 665-676.
 - Semlitsch, R. D. & Schmiedehausen, S. (1994).
 -  Parental contributions to variation in hatchling size and its  relationship to growth and metamorphosis in tadpoles of Rana lessonae and  Rana esculenta.
 Copeia,  1994 (2), 406-412.
 - Semlitsch, R. D., Schmiedehausen, S., Hotz, H., & Beerli, P. (1996).
 -  Genetic compatibility between sexual and clonal genomes in local  populations of the hybridogenetic Rana esculenta complex.
 Evolutionary Ecology,  10 (5), 531-543.
 - Semlitsch, R. D., Schmiedehausen, S., Hotz, H., Beerli, P., & Guex, G.-D.  (1993).
 -  Differences in larval performance among coexisting hemiclones of  hybridogenetic water frogs are of similar magnitude as those between hybrids  and parental species.
 In: Evolution 93. Fourth Congress of the European Society for  Evolutionary Biology, (Catzeflis & et al., F. M., eds) p. 409.  Université Montpellier II.
 - Shpun, S., Hoffman, J., & Katz, U. (1992).
 -  Anuran Amphibia which are not acclimable to high salt, tolerate high  plasma urea.
 Comparative Biochemistry and Physiology,  A 103 (3),  473-477.
 - Sin, G. (1979).
 -  [A study on the reproduction biology of Rana ridibunda].
 Stud. Cercet. Biol., Ser. Biol. Anim. 31 (1), 47-51.
 - Sinsch, U. (1984).
 -  Thermal influences on the habitat preference and the diurnal activity  in three European Rana species.
 Oecologia,  64, 125-131.
 - Sinsch, U. & Eblenkamp, B. (1994).
 -  Allozyme variation among Rana balcanica, R. levantina, and R.  ridibunda (Amphibia: Anura).
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  32 (1), 35-43.
 - Sinsch, U. & Schneider, H. (1996).
 -  Bioacoustic assessment of the taxonomic status of pool frog  populations (Rana lessonae) with reference to a topotypical population.
 Journal of Zoological Systematics and Evolutionary Research,   34, 63-73.
 - Sjögren, P. (1988).
 -  Metapopulation biology of Rana lessonae Camerano on the northern  periphery of its range.
 Acta Universitatis Upsaliensis [Comprehensive Summaries of  Uppsala Dissertations from the Faculty of Sciences], Uppsala,,  157,  1-35.
 - Sjögren, P. (1989).
 -  Distribution and extinction patterns among northern fringe  populations of the pool frog (Rana lessonae): the importance of  interpopulation distance from a conservational perspective.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [275]. University of Kent Canterbury.
 - Sjögren, P. (1991a).
 -  Extinction and isolation gradients in metapopulations: the case of  the pool frog (Rana lessonae).
 Biological Journal of the Linnaean Society,  42 (1&2).
 - Sjögren, P. (1991b).
 -  Genetic variation in relation to demography of peripheral pool frog  populations (Rana lessonae).
 Evolutionary Ecology,  5, 248-271.
 - Sjögren, P., Elmberg, J., & Berglind, S.-Å. (1988).
 -  Thermal preference in the pool frog Rana lessonae: impact on the  reproductive behaviour of a northern fringe population.
 Holarctic Ecology,  11 (3), 178-184.
 - Sofianidou, T. S. (1996).
 -  Electrophoretic studies of hybrids of water frogs (Rana epeirotica,  R. balcanica) in the Ionian zone of Greece.
 Israel Journal of Zoology,  42 (2), 149-157.
 - Sofianidou, T. S., Schneider, H., & Asimakopoulos, B. (1987).
 -  Distribution of the water frog Rana epeirotica (Amphibia, Anura) in  Greece.
 In: Proceedings of the 4th Ordinary General Meeting of the  Societas Europaea Herpetologica, (Gelder, van, J. J., Strijbosch, H.,  Bergers, & M., P. J., eds) pp. 365-367. Faculty of Sciences Nijmegen.
 - Sofianidou, T. S., Schneider, H., & Sinsch, U. (1994).
 -  Comparative electrophoretic investigation on Rana balcanica and Rana  ridibunda from northern Greece.
 Alytes,  12 (3), 93-108.
 - Som, C. (1996).
 -  The importance of female choice for the population structure of  the Rana lessonae / Rana esculenta hybrid system.
 Diploma thesis Universität Zürich.
 - Spacková, V. (1981).
 -  Properties of green frogs from different types of populations in  Czechoslovakia.
 Casopis Moravského Musea (Vedy prírodní) [Acta Musei  Moraviae (Scientiae naturales)],  66, 171-187.
 - Spolsky, C. & Uzzell, T. (1984).
 -  Natural interspecies transfer of mitochondrial DNA in amphibians.
 Proceedings of the National Academy of Sciences of the United  States of America,  81 (18), 5802-5805.
 - Spolsky, C. & Uzzell, T. (1986).
 -  Evolutionary history of the hybridogenetic hybrid frog Rana esculenta  as deduced from mtDNA analyses.
 Molecular Biology and Evolution,  3 (1), 44-56.
 - Stangier, U. (1988).
 -  Kleingewässerrückgang im westlichen Münsterland und  heutige potentielle Vernetzung der Amphibienpopulationen.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 117-128. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Stauffer, H.-P. & Semlitsch, R. D. (1993).
 -  Effects of visual, chemical and tactile cues of fish on the  behavioural responses of tadpoles.
 Animal Behaviour,  46, 355-364.
 - Steinwarz, D. & Schneider, H. (1991).
 -  Distribution and bioacoustics of Rana perezi Seoane, 1885 (Amphibia,  Anura, Ranidae) in Tunisia.
 Bonner zoologische Beiträge,  42 (3-4), 283-297.
 - Stugren, B. & Kaplanidis, V. (1989).
 -  Beiträge zur Systematik der Grünfrösche (Artenkreis Rana  esculenta L.) aus Griechenland.
 Studia Univ. Babes-Bolyai, Biologia,,  34 (1), 57-68.
 - Suturová, H. (1981).
 -  Poznámky k bionomii skokana skrehotavého (Rana ridibunda  Pallas) v Brne-Holáskách [Contribution to the bionomy of marsh frog  (Rana ridibunda Pallas) in Brno-Holásky.
 Casopis Moravského Muzea (Acta Musei Moraviae),  66,  159-169.
 - Talvi, T. (1992).
 -  Amphibians and reptiles of Estonia: list, geographic relationships  and current situation.
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 429-432.
 - Tarkhnishvili, D. (1993).
 -  Anurans of Borjomi Canyon: Clutch parameters and guild structure.
 Alytes,  11 (4), 140-154.
 - Tegelström, H. & Sjögren, P. (1990).
 -  Monomorphic "DNA-fingerprints" in northern pool frogs (Rana  lessonae).
 Fingerprint News,  2 (1), 7-9.
 - Toktamysova, Z, S. & Kaidaulova, E, V. (1996).
 -  Growth, development, and respiration rate of Rana ridibunda Pall.  larvae exposed to chemicals.
 Russian Journal of Ecology,  27 (6), 450-451.
 - Tunner, H. G. (1970).
 -  Das Serumeiweissbild einheimischer Wasserfrösche und der  Hybridcharakter von Rana esculenta.
 Verhandlungsberichte der deutschen zoologischen Gesellschaft,   64, 352-358.
 - Tunner, H. G. (1972).
 -  Serologische und morphologische Untersuchungen zur Frage der  Artabgrenzung bei Wasserfröschen aus der Umgebung von Mainz  (Rhein-Main-Gebiet).
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  10 (2), 127-132.
 - Tunner, H. G. (1973a).
 -  Das Albumin und andere Bluteiweisse bei Rana ridibunda Pallas, Rana  lessonae Camerano, Rana esculenta Linné und deren Hybriden.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  11 (3), 219-233.
 - Tunner, H. G. (1973b).
 -  Demonstration of the hybrid origin of the common green frog Rana  esculenta L.
 Naturwissenschaften,  60 (10), 481-482.
 - Tunner, H. G. (1974).
 -  Die klonale Struktur einer Wasserfroschpopulation.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  12 (4), 309-314.
 - Tunner, H. G. (1978).
 -  Kampfverhalten mitteleuropäischer Wasserfrösche [Rana  lessonae, Rana ridibunda, Rana esculenta (Hybride)].
 Wissenschaftlicher Film (Wien),  22, 33-39.
 - Tunner, H. G. (1979).
 -  The inheritance of morphology and electrophoretic markers from  homotypic crosses of the hybridogenetic Rana esculenta.
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 89-109.
 - Tunner, H. G. (1980).
 -  Kreuzungsexperimente mit Wasserfröschen aus österreichischen  und polnischen Mischpopulationen (Rana lessonae + Rana esculenta). Eine  Analyse biochemischer und morphologischer Merkmale.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  18 (4), 257-297.
 - Tunner, H. G. (1992).
 -  Locomotory behaviour in water frogs from Neusiedlersee (Austria,  Hungary). 15 km migration of Rana lessonae and its hybridogenetic associate  Rana esculenta.
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 449-452.
 - Tunner, H. G. (1994).
 -  The morphology and biology of triploid hybridogenetic Rana esculenta:  does genome dosage exist?
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) p. 505. Zoologica Poloniae 39.
 - Tunner, H. G. & Dobrowsky, M.-T. (1976).
 -  Zur morphologischen, serologischen und enzymologischen  Differenzierung von Rana lessonae und der hybridogenetischen Rana esculenta  aus dem Seewinkel und dem Neusiedlersee (Österreich, Burgenland).
 Zoologischer Anzeiger,  197 (1/2), 6-22.
 - Tunner, H. G. & Heppich, S. (1981).
 -  Premeiotic genome exclusion during oogenesis in the common edible  frog, Rana esculenta.
 Naturwissenschaften,  68 (4), 207-208.
 - Tunner, H. G. & Heppich, S. (1982).
 -  A genetic analysis of water frogs from Greece: evidence for the  existence of a cryptic species.
 Zeitschrift für zoologische Systematik und  Evolutionsforschung,  20 (3), 209-223.
 - Tunner, H. G. & Heppich, S. (1989).
 -  The hybridogenetic Rana esculenta of the Neusiedlersee region  (central Europe). Aspects of life history and distribution of clones.
 In: First World Congress of Herpetology. Abstracts, (Halliday,  T., Baker, J., & Hosie, L., eds) p. [299]. University of Kent Canterbury.
 - Tunner, H. G. & Heppich-Tunner, S. (1991).
 -  Genome exclusion and two strategies of chromosome duplication in  oogenesis of a hybrid frog.
 Naturwissenschaften,  78 (1), 32-34.
 - Tunner, H. G. & Heppich-Tunner, S. (1992a).
 -  A new population system of water frogs discovered in Hungary.
 In: Proceedings of the 6th Ordinary General Meeting of the  Societas Europaea Herpetologica. 19-23 August 1991. Budapest, Hungary,  (Korsós, Z. & Kiss, I., eds) pp. 453-460.
 - Tunner, H. G. & Heppich-Tunner, S. (1992b).
 -  Triploid all male offspring from a cross between diploid hybrid  frogs.
 New Trends in Genetics. Annual Meeting of the Genetic Society  27.-30. September 1992, Tübingen,  , 108.
 - Tunner, H. G. & Hödl, W. (1978).
 -  Warn- oder Alarmruf und Schreckruf bei Rana ridibunda ridibunda  (Salientia, Ranidae).
 Zoologischer Anzeiger,  200 (5/6), 386-390.
 - Tunner, H. G. & Nopp, H. (1979).
 -  Heterosis in the common European water frog.
 Naturwissenschaften,  66, 268-269.
 - Tunner, H. G. & Uzzell, T. (1974).
 -  Das Serumalbumin bei Rana ridibunda perezi (Salientia, Ranidae).
 Salamandra,  10 (3/4), 137-139.
 - Ullerich, F. H. (1967).
 -  Weitere Untersuchungen über Chromosomenverhältnisse und  DNS-Gehalt bei Anuren (Amphibia).
 Chromosoma,  21, 345-368.
 - Uzzell, T. (1979a).
 -  Immunological variation in Rana lessonae (Amphibia, Salientia).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 29-33.
 - Uzzell, T. (1979b).
 -  Immunological distances between the serum albumins of Rana ridibunda  and Rana lessonae.
 Proceedings of the Academy of Natural Sciences of Philadelphia,   130 [1978], 1-10.
 - Uzzell, T. (1982a).
 -  Immunological relationship of western Palearctic water frogs  (Salientia: Ranidae).
 Amphibia-Reptilia,  3 (2/3), 135-143.
 - Uzzell, T. (1982b).
 -  Introgression and stabilization in western Palearctic species of  water frogs.
 In: Environmental adaptation and evolution, (Mossakowski, D. &  Roth, G., eds) pp. 275-295. Gustav Fischer Stuttgart and New York.
 - Uzzell, T. (1983).
 -  An immunological survey of Italian water frogs (Salientia: Ranidae).
 Herpetologica,  39 (3), 225-234.
 - Uzzell, T. & Berger, L. (1975).
 -  Electrophoretic phenotypes of Rana ridibunda, Rana lessonae, and  their hybridogenetic associate, Rana esculenta.
 Proceedings of the Academy of Natural Sciences of Philadelphia,   127 (2), 13-24.
 - Uzzell, T., Berger, L., & Günther, R. (1975).
 -  Diploid and triploid progeny from a diploid female of Rana esculenta  (Amphibia Salientia).
 Proceedings of the Academy of Natural Sciences of Philadelphia,   127 (11), 81-91.
 - Uzzell, T., Günther, R., & Berger, L. (1977).
 -  Rana ridibunda and Rana esculenta: a leaky hybridogenetic system  (Amphibia Salientia).
 Proceedings of the Academy of Natural Sciences of Philadelphia,   128 (9), 147-171.
 - Uzzell, T. & Hotz, H. (1979).
 -  Electrophoretic and morphological evidence for two forms of green  frogs (Rana esculenta complex) in peninsular Italy (Amphibia, Salientia).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 13-27.
 - Uzzell, T., Hotz, H., & Berger, L. (1980).
 -  Genome exclusion in gametogenesis by an interspecific Rana hybrid:  evidence from electrophoresis of individual oocytes.
 Journal of experimental Zoology,  214 (3), 251-259.
 - Uzzell, T., Hotz, H., Guex, G.-D., & Beerli, P. (1994).
 -  Albumin cDNA sequences of western Palearctic water frogs:  evolutionary changes in frog albumins.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 509-510. Zoologica Poloniae 39.
 - Uzzell, T. & Tunner, H. G. (1983).
 -  An immunological analysis of Spanish and French water frogs.
 Journal of Herpetology,  17 (4), 320-326.
 - van Gelder, J. J. (1975).
 -  Vokalisation und Verhalten bei Rana esculenta und Rana temporaria.
 Bulletin de la Société Zoologique de France,  100  (4), 690-691.
 - van Gelder, J. J. (1988).
 -  Erste Ergebnisse einer biotelemetrischen Studie an  Wasserfröschen.
 In: Beiträge zur Biologie und Bibliographie (1960-1987) der  europäischen Wasserfrösche, (Günther, R. & Klewen, R., eds)  volume 1 pp. 145-151. Jahrbuch für Feldherpetologie, Beiheft Duisburg.
 - Vancea, S., Fuhn, I. E., & Stugren, B. (1989).
 -  Sur la composition taxonomique du peuplement de grenouilles vertes  (complexe Rana esculenta L.) de Roumanie.
 Studia Univ. Babes-Bolyai, Biologia,,  34 (2), 69-77.
 - Veith, M. (1996).
 -  Molecular markers and species delimitation: examples from the  European batrachofauna.
 Amphibia-Reptilia,  17 (4), 303-314.
 - Viegas, A. M. (1980).
 -  [Isozymes of lactic dehydrogenase in Rana iberica Boulenger and Rana  ridibunda perezi Seoane].
 Arq. Mus. Bocage,  (2 Ser.) 7 (6), 81-94.
 - Vinogradov, A. E. (1994).
 -  Measurement by flow cytometry of genomic AT/GC ratio and genome size.
 Cytometry,  16, 34-40.
 - Vinogradov, A. E. & Borkin, L. J. (1993).
 -  Allometry of base pair specific-DNA contents in Tetrapoda.
 Hereditas,  118, 155-163.
 - Vinogradov, A. E., Borkin, L. J., Günther, R., & Rosanov, J. M. (1990).
 -  Genome elimination in diploid and triploid Rana esculenta males:  cytological evidence from DNA flow cytometry.
 Genome,  33, 619-627.
 - Vinogradov, A. E., Borkin, L. J., Günther, R., & Rosanov, J. M. (1991).
 -  Two germ cell lineages with genomes of different species in one and  the same animal.
 Hereditas,  114, 245-251.
 - Vinogradov, A. E., Rozanov, J. M., Caune, I. A., & Borkin, L. J. (1988).
 -  Eliminacija genoma odnogo iz roditelej do predmejoticeskogo sinteza  DNK u gibridogennogo vida Rana esculenta [Genome elimination of one of the  parents in the hybridogenic species Rana esculenta prior to premeiotic DNA  synthesis].
 Citologija,  30 (6), 691-698.
 - Vitanova, L., Popova, E., Kupenova, P., Kosteljanetz, N., & Belcheva, S.  (1990).
 -  Comparative studies on the effects of some enkephalin agonists on the  ERG of frog and turtle.
 Comparative Biochemistry and Physiology,  C 97 (1),  93-98.
 - Vogel, P. (1977).
 -  Isozyme der Lactatdehydrogenase (LDH) im Rana  esculenta-Komplex.
 Ph.D. dissertation Universität Zürich.
 - Vogel, P. & Chen, P. S. (1976a).
 -  Genetic control of LDH isozymes in the Rana esculenta complex.
 Experientia,  32 (3), 304-307.
 - Vogel, P. & Chen, P. S. (1976b).
 -  Untersuchungen über die Isozyme der Lactatdehydrogenase (LDH)  beim Rana esculenta-Komplex.
 Revue suisse de Zoologie,  83 (4), 944-947.
 - Vogel, P. & Chen, P. S. (1977).
 -  A further study of LDH isozymes in the Rana esculenta complex.
 Experientia,  33 (10), 1285-1287.
 - Vostal, Z., Kyselová, M., & Pircová, E. (1980).
 -  Obojzivelníky Vychodoslovenskej níziny [Die Amphibien der  Ostslowakischen Tiefebene].
 Zborník Vychodoslovenského Muzea v Kosiciach,  20, 149-155.
 - Wagner, E. & Ogielska, M. (1990).
 -  Oogenesis and development of the ovary in European green frog, Rana  ridibunda (Pallas). II. Juvenile stages until adults.
 Zoologische Jahrbücher (Anatomie),  120 (3),  223-231.
 - Wagner, E. & Ogielska, M. (1993).
 -  Oogenesis and ovary development in the natural hybridogenetic water  frog, Rana esculenta L. II. After metamorphosis until adults.
 Zoologische Jahrbücher (Physiologie),  97 (4),  369-382.
 - Wallace, D. G., King, M.-C., & Wilson, A. C. (1973).
 -  Albumin differences among ranid frogs: taxonomic and phylogenetic  implications.
 Systematic Zoology,  22 (1), 1-13.
 - Wettstein, O. (1953).
 -  Herpetologia aegaea.
 Sitzungs-Berichte der akademischen Wissenschaften Wien,  mathematisch-naturwissenschaftliche Klasse, Abteilung I,  162,  651-833.
 - Wettstein, O. (1957).
 -  Nachtrag zu meiner Herpetologia aegaea.
 Sitzungs-Berichte der akademischen Wissenschaften Wien,  mathematisch-naturwissenschaftliche Klasse, Abteilung I,  166,  10-164.
 - Wickbom, T. (1945).
 -  Cytological studies on Dipnoi, Urodela, Anura, and Emys.
 Hereditas,  31, 241-346.
 - Wijnands, H. E. J. (1977).
 -  Distribution and habitat of Rana esculenta complex in the  Netherlands.
 Netherlands Journal of Zoology,  27 (3), 277-286.
 - Wijnands, H. E. J. (1978).
 -  Plasma albumins and biometrical characteristics of different forms of  Rana esculenta complex.
 Zoologische Jahrbücher (Systematik),  105, 337-346.
 - Wijnands, H. E. J. (1979).
 -  Partial ecological isolation of Rana lessonae and Rana esculenta as a  mechanism for maintenance of the hybrid form, Rana esculenta (Anura,  Ranidae).
 Mitteilungen aus dem zoologischen Museum in Berlin,  55  (1), 131-142.
 - Wijnands, H. E. J. & van Gelder, J. J. (1976).
 -  Biometrical and serological evidence for the occurrence of three  phenotypes of green frogs (Rana esculenta complex) in the Netherlands.
 Netherlands Journal of Zoology,  26 (3), 414-424.
 - Wright, D. A. & Richards, C. M. (1993).
 -  Linkage groups in the leopard frog, Rana pipiens. 2N=26.
 In: Genetic maps. Locus maps of complex genomes., (O'Brien &  J., S., eds) pp. 4.326-4.329. Cold Spring Harbor Laboratory Press Cold  Spring Harbor, NY sixth edition.
 - Zahn, A. (1996a).
 -  Beobachtungen zur Migration von Grünfröschen (Rana  lessonae-kl. esculenta-Komplex).
 Mitt. LARS Bayern, München,,  15 (1), 45-48.
 - Zahn, A. (1996b).
 -  Habitat isolation and habitat quality - consequences for populations  of the Rana esculenta / lessonae complex.
 Spixiana, München,,  19, 327-340.
 - Zahn, A. (1997a).
 -  Hinweise zur Prädation von Froschlurchlarven durch Molche.
 Salamandra,  33 (1), 89-91.
 - Zahn, A. (1997b).
 -  Untersuchungen zum Rana kl. esculenta - lessonae-Komplex in  Oberbayern.
 Salamandra,  33 (1), 79-88.
 - Zancanaro, C., Merigo, F., Digito, M., & Pelosi, G. (1996).
 -  Fat body of the frog Rana esculenta: an ultrastructural study.
 Journal of Morphology,  227 (3), 321-334.
 - Zavadil, V. (1994).
 -  On the distribution of water frogs (Rana esculenta synklepton) in the  Czech Republic with some notes from this territory.
 In: II International Symposium on Ecology and Genetics of  European Water Frogs, 18-25 September 1994, Wroclaw, Poland, (Ogielska, M.,  ed) pp. 425-439. Zoologica Poloniae 39.
 

if you find errors send mail to:
HTML:
Peter Beerli  (beerli@scs.fsu.edu) 
Contents:Hansjürg Hotz  (hotz@zoolmus.unizh.ch)