М. Л. Георгиева (2022). CURRENT GEODETIC TECHNOLOGIES IN THE MAINTENANCE OF SPECIALIZED MAPS AND REGISTERS OF SEA BEACHES IN THE REPUBLIC OF BULGARIA. SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Informatics, Geoinformatics and Remote Sensing, 179-186. https://doi.org/10.5593/sgem2022/2.1/s09.22