I. O. Novlyanskaya and R. A. Kascheev, “Comparison of the Modern Earth”™s Gravity Field Models”, Rev. Publicando, vol. 4, no. 13 (2), pp. 1027–1037, Dec. 2017, Accessed: Jan. 22, 2025. [Online]. Available: https://revistapublicando.org/revista/index.php/crv/article/view/1032