Стебельська, Г. Я. (2015). Geologic conditions of prospecting and development of high viscocity oils and natural bitumen. Visnyk of V. N. Karazin Kharkiv National University, Series "Geology. Geography. Ecology", 38(1049), 53-57. Retrieved from https://periodicals.karazin.ua/geoeco/article/view/7669