Irena Ilcheva, Anna Yordanova, Lubenova Lubenova, Gergana Drumeva, Vesela Rainova. "APPROACH AND INDICATOR SYSTEM FOR ASSESSMENT THE IMPACTS OF RESERVOIRS AND PROLONGED DROUGHT IDENTIFICATION IN BULGARIA FOR WATER FRAMEWORK DIRECTIVE." SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Water Resources. Forest, Marine and Ocean Ecosystems, 2022, pp. 57-64. https://doi.org/10.5593/sgem2022/3.1/s12.07