М. В. Щелчкова. THE RELIC STEPPES OF YAKUTIA (EASTERN SIBERIA, RUSSIA) - UNIQUE ECOSYSTEMS OF THE PAST (PRODUCTIVITY, BIOLOGICAL ACTIVITY, PROTECTION). SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Ecology, Economics, Education and Legislation, 2018, pp. 949-956. https://doi.org/10.5593/sgem2018/5.1/s20.122