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2. A. P. Markeev, Libration Points in Celestial Mechanics and Cosmodynamics (Nauka, Moscow, 1978) [in Russian].
3. L. Euler, “De motu rectilineo trium corporum se mutuo attrahentum,” Novi Comm. Acad. Sci. Imp. Petrop. 11, 144–151 (1767).
4. J. L. Lagrange, Essai sur le Problème des Trois Corps. Oeuvres de Lagrange (Gauthier Villars, Paris, 1873), Vol. 6, pp. 229–324.
5. On the stability of motion in one particular case of the three-body problem;A. M. Lyapunov,1956