“STRATIGRAPHIC POSITION OF OXFORDIAN DEPOSITS BIVALVE MOLLUSCS IN THE NORTH-WESTERN OUTSKIRTS OF DONBAS”. 2016. Visnyk of V. N. Karazin Kharkiv National University. Series Geology. Geography. Ecology, no. 43 (May): 45-50. https://periodicals.karazin.ua/geoeco/article/view/5741.