Stoykov, Evgeni. “GEODETIC BASIS WHEN PERFORMING MARINE HYDROGRAPHIC MEASUREMENTS: GEODETIC BASIS WHEN PERFORMING MARINE HYDROGRAPHIC MEASUREMENTS”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 23, no. 1 (March 26, 2023): 26–32. Accessed December 4, 2024. https://jsar.ftn.shu.bg/index.php/jsar/article/view/350.