Kirilova, Krasimira, and Kiril Yanchev. “ABOUT THE CHOICE OF PARAMETERS WHEN REPRESENTING THE NORMAL EARTH AS A REFERENCE FRAME IN GEODESY: ABOUT THE CHOICE OF PARAMETERS WHEN REPRESENTING THE NORMAL EARTH AS A REFERENCE FRAME IN GEODESY”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 24, no. 1 (November 23, 2023): 11–16. Accessed November 22, 2024. https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/362.