Global ellipsoid-referenced topographic, bathymetric and stripping corrections to gravity disturbanceVajda, Peter; Ellmann, Artu; Meurers, B.; Vanicek, P.; Novak, Pavel; Tenzer, RobertStudia geophysica et geodaetica2008 / 1, p. 19-34 https://link.springer.com/article/10.1007/s11200-008-0003-5