Sergey Alexeev. "PERMAFROST AND FROST MOUNDS OF THE OKINSKOE PLATEAU (EASTERN SAYAN RIDGE), RUSSIA." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Minining, 2018, pp. 531-538. https://doi.org/10.5593/sgem2018/1.2/s02.067