Kirilova K, Yanchev K. 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. JSAR [Internet]. 2023 Nov. 23 [cited 2024 Nov. 21];24(1):11-6. Available from: https://jsar.ftn.shu.bg/index.php/jsar/article/view/362