TY - CPAPER AU - Davis Dinkov AU - Atanas Kitev AU - Desislava Hristova TI - HIGH-RESOLUTION TOPOGRAPHIC DATA OF RIVER LANDSCAPES USING AERIAL PPK-UAV PHOTOGRAMMETRY: A CASE STUDY IN OGOSTA RIVER VALLEY, NORTHWESTERN BULGARIA T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Informatics, Geoinformatics and Remote Sensing PY - 2021 SP - 293 EP - 300 DO - 10.5593/sgem2021/2.1/s10.67 PB - STEF92 Technology ER -