МатвеевA. В., and И. В. Колосова. “TURON NANNOPLANKTON BIOSTRATIGRAPHY OF NORTH-WESTERN DONBASS”. Visnyk of V. N. Karazin Kharkiv National University, series "Geology. Geography. Ecology"0, no. 43 (May 17, 2016): 69-75. Accessed April 18, 2024. https://periodicals.karazin.ua/geoeco/article/view/5745.