1. Barzaghi R., Brovelli M.A. e Sacerdote F., 1990, Altimetry-Gravimetry problem: an example, proceedings of the International Association of Geodesy Symposia, Symposium n. 104, Edimburgh, 10–11 Agosto 1989, Springer-Verlag, pp. 87–95.
2. Holota P., 1980, The altimetry-gravimetry boundary problem, presented at the International Scientific Conference of section 6 Intercosmos, Albena.
3. Kaula W. M., 1966, Theory of satellite geodesy, Blaisdell Publishing Company.
4. Krarup T. 1973, Letters on Molodensky's Problem, IAG Special Study Group 4. 31.
5. Mainville A., 1987, The altimetry-gravimetry problem using orthonormal base functions, Geodetic Survey of Canada, Technical Report n. 8.