BESHR, Ashraf A. A.; ZARZOURA, Fawzi H. Approximation of gravitational calculation based on analytical models. Geodesy and Cartography, [S. l.], v. 48, n. 3, p. 124–133, 2022. DOI: 10.3846/gac.2022.14854. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/14854. Acesso em: 9 may. 2025.