1. Andoyer, M.H., Cours de Mécanique Céleste, Paris: Gauthier-Villars et cie, vol. 1, p. 57.
2. Arnold, V.I., Les Méthodes Mathématiques de la Mécanique Classique, Mir, 1976.
3. Barkin, Yu.V., Unperturbed chandler motion and perturbation theory of the rotation motion of deformable celestial bodies, Astron. Astrophys. Trans., 1998, vol. 17, no. 3, pp. 179–219.
4. Beletskii, V.V., Motion of an Artificial Satellite About Its Center of Mass, S. Monson, Jerusalem: Israel Program for Scientific Translations, 1966.
5. Byrd, P.F. and Friedman, M.D., Handbook of Elliptic Integrals for Engineers and Scientists, Berlin Heidelberg, New York: Springer-Verlag, 1971.