Bibliography

Lyapkov, S. M., O. A. Ermakov, and S. V. Titov. 2017. [Distribution and origin of two forms of the Marsh Frog Pelophylax ridibundus complex (Anura, Ranidae) from Kamchatka based on mitochondrial and Nuclear DNA Data] In Russian. Zoologicheskii Zhurnal. Moscow 9: 1384–1391 (published in English in Biol. Bull., 2018, 45: 699–705) .