1. The Restricted Problem of Three Bodies;V. Szebehely,1967
2. Markeev, A.P.: Libration Points in Celestial Mechanics and Cosmodynamics. Nauka, Moscow (1978) (in Russian)
3. Whipple, A.L., Szebehely, V.: The restricted problem of n + ν bodies. Celestial Mechanics 32, 137–144 (1984)
4. Arnold, V.I.: Small denominators and problems of stability of motion in classical and celestial mechanics. Uspekhi Math. Nauk. 18(6), 91–192 (1963) (in Russian)
5. Moser, J.: Lectures on the Hamiltonian Systems. Mir, Moscow (1973) (in Russian)