(1)
TENZER, R.; ABDALLA, A.; VAJDA, P.; HAMAYUN, K. The Spherical Harmonic Representation of the Gravitational Field Quantities Generated by the Ice Density Contrast. Contrib. Geophys. Geod. 2010, 40 (3), 207-223. https://doi.org/10.2478/v10126-010-0009-1.