Zarubin, Yu. O., M. V. Gunda, and A. V Konosh. “Assessment of Technical and Economic Risks of Unconventional Gas Production in Ukraine”. JOURNAL OF HYDROCARBON POWER ENGINEERING 1, no. 2 (December 15, 2017): 81–88. Accessed April 29, 2024. https://ogpe.nung.edu.ua/index.php/jhpe/article/view/18.