Reference

Angel Dyugmedzhiev, Kostadin Andonov, Georgi Popgeorgiev, Borislav Naumov, Yurii V. Kornilev (2020): Crepuscular and nocturnal activity of the Nose-horned viper, Vipera ammodytes (Linnaeus, 1758) is more common than previously reportedHerpetozoa33: 165 - 169.

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