Стебельська, Г. Я. “New Approach to Crude Oil Classification Problem”. Visnyk of V. N. Karazin Kharkiv National University, series "Geology. Geography. Ecology"0, no. 46 (November 1, 2017): 50-56. Accessed November 22, 2024. https://periodicals.karazin.ua/geoeco/article/view/9513.