References
- Baran I. Atatür M. K. (1997): Turkish herpetofauna (amphibians and reptiles). – Ministry of Environment, Ankara.
- Council of Europe(1991): Recommendation n° 26 (1991) on the conservation of some threatened reptiles in Europe. The Standing Committee of the Convention on the Conservation of European Wildlife and Natural Habitats (Bern Convention).
- Hille A. (1997): Biochemical variation between populations of the western and the eastern grass snake (Natrix natrix) from the transition zone in Nordrhein-Westfalen, Germany. p. 177–184. – In: W. Böhme, W. Bischoff, T. Ziegler (Eds.), Herpetologia bonnensis, Proceedings of the 8th ordinary general meeting of the Societas Europaea Herpetologica, SEH, Bonn.
- Mulder J. (1995): Herpetological observations in Turkey (1987–1995). – Deinsea 2: 51–66.
- Nilson G. Andrén C. Flärdh B. (1988): Die Vipern der Türkei. – Salamandra 24: 215–247.
- Orlov N. L. Tunijev B. S. (1986): Sovremennyje arealy, vozmožnyje puti ich formovanija I filogenija trech vidov gadjuk evro-sibirskoj gruppy kompleksa Vipera kaznakowi na Kavkaze [The recent Areas their possible genesis and the phylogeny of three viper species of eurosiberian group of the Vipera kaznakowi complex in Caucasus]. – Trudy zoologičeskogo Instituta AN SSSR 157: 107– 135.
- Orlov N. L. Tunijev B. S. (1987): Novyj vid uža Natrix megalocephala sp. nov. s Kavkaza (Ophidia: Colubridae) [New species of the grass snake from the Caucasus, Natrix megalocephala sp. nov.]. – Trudy zoologičeskogo Instituta AN SSSR 158: 116–130.
- Orlov N. L. Tunijev B. S. (1999): Natrix megalocephala Orlow und Tunijew, 1987 – Großkopf-Ringelnatter. p. 505–512. In: W. Böhme (Ed.), Handbuch der Reptilien und Amphibien Europas, Band 3/IIA Schlangen II. – Wiesbaden.
- Velenský P. (1997): Natrix megalocephala Orlov et Tuniyev, 1987: Nový druh evropské herpetofauny? [Natrix megalocephala Orlov et Tuniyev, 1987: A new species of the European reptiles fauna?]. – Gazella (Prague) 24: 177–186.