1. Beletskii, V. V.: 1965,Motion of an Artificial Satellite about Its Center of Mass, NASA TT F-429.
2. Byrd, P. F. and Friedman, M. D.: 1954,Handbook of Elliptic Integrals for Engineers and Physicists, Springer-Verlag, Berlin.
3. Campbell, J. A. and Jefferys, W. H.: 1970,Celest. Mech. 2, 467.
4. Cochran, J. E.: 1970, Dissertation, University of Texas, Austin, Texas.
5. Cochran, J. E., Tapley, B. D., and Fitzpatrick, P. M.: 1970,Abstract, Bull. Am. Astron. Soc. 2, 243.