1. Azevedo, C., Cabral, H.E., Ontaneda, P.: On the fixed homogeneous circle problem. Adv. Nonlinear Stud. 7(1), 47–75 (2007)
2. Markeev, A.P.: Linear Hamiltonian Systems and Some Applications to the Problem of Stability of Motion of Satellite Relative to the Center of Mass, p. 396. Nauka, Izhevsk, Moscow (2009) (In Russian)
3. Meyer, K., Hall, G., Offin, D.: Introduction to Hamiltonian dynamical systems and the N-body probem. Appl. Math. Sci. 90, 396 (2009)
4. Moser, J.K.: Stable and Random Motions in Dynamical Systems. Princeton Unversity Press, Princeton (1973)
5. Sitnikov, K.: Existence of oscillating motions for the three-body problem. Dokl. Akad. Nauk. USSR 133, 303–306 (1960)