1. Chapman, S. et Bartels, J.: 1940,Geomagnetism, vol. I, Clarendon Press, Oxford.
2. Dubois, J. et Link, F.: 1969,The Moon 1, 19.
3. Hansen, J. E. et Matsushima, S.: 1966,J. Geophys. Res. 71, 1076.
4. Link, F.: 1970, inPhysics and Astronomy of the Moon, sec. ed., (ed. by 2. Kopal), Acad. Press, New York.
5. Link, F.: 1969,Eclipse Phenomena, Springer, Heidelberg.