1. Theory of orbits;Szebehely,1967
2. Certain problems of moon flight dynamics, in “The Russian Literature of Satellites,” Pt., p. 115;Egorov,1958
3. Recherches dórbites périodiques dans le probleme restreint plan (systéme Terre-Lune);Broucke,1962
4. Translated from russian: The evolution of orbits of artificial satellites of planets under the action of gravitational perturbations of external bodies,;Lidov;Iskusstvennye Sputniki Zemli,1961
5. The evolution of orbits of artificial satellites of planets under the action of gravitational perturbations of external bodies;Lidov;P&SS,1962