“Supplementary (additional) Exploration Prospects for the Upper Viséan Gas-Condensate Pools of Kotelevske Field”. 2013. Visnyk of V. N. Karazin Kharkiv National University. Series Geology. Geography. Ecology 39 (1084): 95-98. https://periodicals.karazin.ua/geoeco/article/view/7563.