Spasov , Petyo. “METHOD FOR BUILDING A WORKING GEODETIC NETWORK OF REFLECTIVE MARKS FOR CONSTRUCTION NEEDS: METHOD FOR BUILDING A WORKING GEODETIC NETWORK OF REFLECTIVE MARKS FOR CONSTRUCTION NEEDS”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 22, no. 1 (March 26, 2023): 15–19. Accessed November 24, 2024. https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/333.