Smagol, V., and A. Dzhulai. 2018. “Changes in Weddell Seal Leptonychotes Weddellii (Phocidae) Behaviour at the First Stage of Ontogenesis”. Ukrainian Antarctic Journal, no. 1(17) (December), 113-18. https://doi.org/10.33275/1727-7485.1(17).2018.36.