TY - CPAPER AU - Dimitar B. Nikolov AU - Cvetan Dimitrov TI - ASSESSMENT OF THE LONG TERM VARIABILITY OF THE SNOW COVER IN THE VITOSHA MOUNTAIN T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Energy and Clean Technologies PY - 2021 SP - 221 EP - 228 DO - 10.5593/sgem2021/4.1/s19.38 PB - STEF92 Technology ER -