2024. Jurassic system stratigraphy at the Kamianka village. Part 2. The Cherkas’ka formation. Visnyk of V. N. Karazin Kharkiv National University. Series Geology. Geography. Ecology. 60 (Jun. 2024), 56–67. DOI:https://doi.org/10.26565/2410-7360-2024-60-04.