1. Brouwer, D. and Clemence, G.: 1961,Methods of Celestial Mechanics, Academic Press, New York, London.
2. Doubochine, G. N.: 1961,La théorie d'attraction (Russe, Fiasmtgiz).
3. Doubochine, G. N.: 1968,La mécanique céleste (Russe, Nauka).
4. Doubochine, G. N.: 1971,Celest. Mech. 2, 454 (Russe).
5. Doubochine, G. N.: 1972,Celest. Mech. 4, 423.