Özeti, N., Yilmaz, I., & Arikan, H. (?????.).  (1986).  A morphological and serological study on the populations of the species Bombina bombina living in Thrace and Northwest Anatolia. Biologia Gallo-hellenica, 12, 521.

Zafiratos, K. (?????.).  (1977).  Effect of transplanted tail-notochord graft on hind-limb development in anuran tadpole.(Bufo bufo L. ). Biologia Gallo-hellenica, 7(1-2), 45-53.

Zafiratos, K. (?????.).  (1982).  Asynchronous development of the anural limb bud, after heterotopic transplantation, in the studies of limb morphogenesis. Biologia Gallo-hellenica, 9(2), 261-270.

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 EvolutionsforschungZeitschrift für Zoologische Systematik und Evolutionsforschung, 30, 297-315. ????????????? ??? DEC.

Schneider, H., Sinsch, U., & Sofianidou, T. S. (?????.).  (1993).  The water frogs of Greece. Bioacoustic evidence for a new species. Zeitschrift für Zoologische Systematik und EvolutionsforschungZeitschrift für Zoologische Systematik und Evolutionsforschung, 31, 47-63. ????????????? ??? MAR.

Plötner, J. (?????.).  (1998).  Genetic diversity in mitochondrial 12S rDNA of western Palearctic water frogs (Anura, Ranidae) and implications for their systematics. Journal of Zoological Systematics and Evolutionary ResearchJournal of Zoological Systematics and Evolutionary Research, 36, 191-201. ????????????? ??? 1998///.