1. Forsberg R, Brozena JM (1992)The Greenland airborne gravity project — comparison of airborne and terrestrial gravity data. Proceedings of the IAG Symposium No. 112, Potsdam 1992, pp. 171–175
2. Forsberg R, Sideris MG (1993)Geoid computations by the multi-band spherical FFT approach. Manuscripta geodaetica, 18 (1993), pp. 82–90
3. Forsberg R (1996)personal communication
4. Haagmans R, de Min E, van Gelderen M (1993)Fast evaluation of convolution integrals on the sphere using 1D FFT, and comparison with existing methods for Stokes' integral. Manuscripta geodaetica, 18 (1993), pp. 227–241
5. Heiskanen WA, Moritz H (1967)Physical Geodesy. Freeman Company, San Francisco