ВИСОЧАНСЬКИЙ, І. В.; САМЧУК, І. М. Geological factors in the formation conditions of traps in the Orchyk depression perm deposits of Dnieper-Donets basin. Visnyk of V. N. Karazin Kharkiv National University, series "Geology. Geography. Ecology", n. 45, p. 28-38, 7 Mar. 2017.