TY - CPAPER AU - Georgi Zhelezov AU - Velimira Stoyanova TI - DETERMINATION OF THE COASTAL ZONE OF DANUBE RIVER IN BULGARIA T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Ecology, Economics, Education and Legislation PY - 2021 SP - 51 EP - 58 DO - 10.5593/sgem2021/5.1/s20.014 PB - STEF92 Technology ER -