Suyarko, V. G., Ju. V. Yakymenko, and L. V. Ishenko. 2015. “Features of Geological Structure and Prospects of Gas Content in Zmiiv Basement Ledge”. Visnyk of V. N. Karazin Kharkiv National University, Series "Geology. Geography. Ecology" 38 (1049), 69-72. https://periodicals.karazin.ua/geoeco/article/view/7672.