1. A guided tour of the fast Fourier transform;Bergland;IEEE Spectrum,1969
2. Bomford, G., , Geodesy, Oxford at the Clarendon Press, London, 1971,
3. Fourier transform methods in local gravity modeling;Harrison;Bull. Geod.,1989
4. Heiskanen, W. A., , H., Moritz, , Physical Geodesy, W. H. Freeman, New York, 1967,
5. Moritz, H., , Advanced Physical Geodesy, Abacus, Tunbridge Wells, Kent, Great Britain, 1980,