Shabatura, O. 2017. Professor emeritus of the Kyiv university, Tolstoy Mykhaylo – geologist-geophysicist. Visnyk of Taras Shevchenko National University of Kyiv. Geology. 3, 78 (Sep. 2017), 99–103. DOI:https://doi.org/10.17721/1728-2713.78.13.