1. Celestial Mechanics;Finlay-Frendulich,1958
2. Theories of Figures of Celestial Bodies;Jardetzky,1958
3. Figures of Equilibrium of Celestial Bodies;Kopal,1960
4. Dynamics of Close Binary Systems;Kopal,1978
5. TraitÉ de Mécanique Celeste. Tome II;Tisserand,1889