Egiasarian E. M. and Schneider H. (1990), «Advertisement call of tree frogs in Armenia (Anura, Hylidae)», Zool. Anz., 225(3/4), 113 – 122.

Green D. M. (1982), «Mating call characteristics of hybrid toads at Long Point, Ontario», Can. J. Zool., 60, 12.

Malmos K. B., Sullivan B. K., and Trip Lamb (2001), «Calling behavior and directional hybridization between two toads (Bufo microscaphus × B. woodhousii) in Arizona», Evolution, 55(3), 626 – 630.

Nevo E. and Schneider H. (1983), «Structure and variation of Rana ridibunda mating call in Israel (Amphibia, Anura)», Israel J. Zool., 32, 40 – 60.

Radwan N. M. M. and Schneider H. (1988), «Social behaviour, call repertory and variation in the calls of the pool frog, Rana lessonae (Anura: Ranidae)», Amphibia–Reptilia, 9, 329 – 351.

Schneider H. and Sofianidou T. S. (1985), «The mating call of Rana ridibunda (Amphibia, Anura) in Northern Greece as compared with those of Yugoslavian and Israeli population: proposal of a new subspecies», Zool. Anz., 214(5/6), 309 – 319.

Schneider H., Sofianidou T. S., and Kyriakopoulou-Sklavounou P. (1988), «Calling behavior and calls of Rana dalmatina (Anura, Ranidae) in Greece», Zool. Jb. Physiol., 92, 231 – 243.