Bibliography

Sinsch, U., and B. Eblenkamp. 1994. Allozyme variation among Rana balcanica, R. levantina, and R. ridibunda (Amphibia: Anura). Genetic differentiation corroborates the bioacoustically detected species status. Zeitschrift für Zoologische Systematik und Evolutionsforschung 32: 35–43.