KRASNIKOVA, O. et al. 2025. ANALYSIS OF THE METHODS OF DETERMINING THE BRITTLENESS INDEX AND THEIR APPLICATION FOR TERRIGENOUS RESERVOIR ROCKS OF THE DNIPRO-DONETSK BASIN. Visnyk of Taras Shevchenko National University of Kyiv. Geology. 1, 104 (Jan. 2025), 22–29. DOI:https://doi.org/10.17721/1728-2713.104.03.