СНІГИРЬОВ, С. М.; МЕДИНЕЦЬ, В. І.; АБАКУМОВ, О. Н.; ПІЦИК, В. З. Visual Monitoring of Dolphins in the Coastal Waters Near Zmiinyi Island (Black Sea) in 2010-2016. Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy, n. 16, p. 91-95, 8 Sep. 2017.