TY - CPAPER AU - Mila Chilikova-Lubomirova TI - CHALLENGES IN THE HYDROLOGYCAL INDICES IMPLEMENTATION IN THE PROCESS OF DROUGHT IDENTIFICATION AND MONITORING T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on WATER RESOURCES. FOREST, MARINE AND OCEAN ECOSYSTEMS PY - 2014 DO - 10.5593/sgem2014/b31/s12.015 PB - Stef92 Technology ER -