Petrov, Dimiter. “USE OF UNMANNED AERIAL VEHICLES FOR THE NEEDS OF GEODESY AND CADASTRE: USE OF UNMANNED AERIAL VEHICLES FOR THE NEEDS OF GEODESY AND CADASTRE”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 6, no. 1 (March 10, 2023): 133–140. Accessed November 7, 2024. https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/150.