MANOUSSAKIS, Gerassimos; MILAS, Paraskevas. On the existence of neutral directions of the normal gravity field. Contributions to Geophysics and Geodesy, [S. l.], v. 44, n. 1, p. 41–60, 2014. DOI: 10.2478/congeo-2014-0003. Disponível em: https://journal.geo.sav.sk/cgg/article/view/105. Acesso em: 16 aug. 2025.