Глобальні дані та аналітичні моделі
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Morelli C. The International Gravity Standardization NET 1971 (I.G.S.N.71).- International Union of Geodesy and of Geophysics, International Association of Geodesy, Publication Speciale N4, Paris.
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Uotila U.A. Adjustment of a World-Wide Gravity Base Station Network. /Catalogue. 100 Stations/.- Annales Academiae Scientiarum Fennicae. Series A, III. Geologica-Geographica, N73, Helsinki, 1964.