KRUHLOV, Bohdan, et al. “REVIEW OF VISEAN UNCONVENTIONAL RESERVOIRS WITHIN DNIPRO-DONETS DEPRESSION AND COMPARISON TO NORTH AMERICAN UNCONVENTIONAL FORMATIONS”. Visnyk of Taras Shevchenko National University of Kyiv. Geology, vol. 3, no. 106, Nov. 2024, pp. 28-41, https://doi.org/10.17721/1728-2713.106.04.