1. Suyarko V.G., Ishchenko L.V., Yerofieiev A.M., Sukhov V.V., Shmorh Y.S. Heavy metals in oils and formation of bitumen-hydrothermal associations in the rocks of the Dnieper-Donetsk paleorift // Visnyk of V. N. Karazin Kharkiv National University, series "Geology. Geography. Ecology". 2020. № 52. C. 93-102.