Gasso, V. Y., A. M. Hahut, and S. V. Yermolenko. “Biochemical Parameters in the Blood of Grass Snakes (Natrix Natrix) in Ecosystems under Varying Degrees of Anthropogenic Influence”. Regulatory Mechanisms in Biosystems 7, no. 2 (September 28, 2016): 127-131. Accessed July 9, 2020. https://medicine.dp.ua/index.php/med/article/view/291.