Mila Chilikova–Lubomirova, Nina Philipova, Elena Nikolova. SOME CONSIDERATIONS ABOUT THE SUSTAINABLE MANAGEMENT OF AGROECOSYSTEMS WITH REGARD TO DROUGHTS. BULGARIAN PERSPECTIVE. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Ecology, Economics, Education and Legislation, 2020, pp. 717-724. https://doi.org/10.5593/sgem2020/5.1/s20.090