Maria Asenova. GIS-BASED ANALYSIS OF THE TREE HEALTH PROBLEMS USING UAV IMAGES AND SATELLITE DATA. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Water Resources. Forest, Marine and Ocean Ecosystems, 2018, pp. 813-820. https://doi.org/10.5593/sgem2018/3.2/s14.104