1. Periodic orbits in the restricted three-body problem with Earth-Moon masses;Broucke,1968
2. Very restricted four-body problem;Huang,1960
3. Some periodic solutions of a four-body problem;Cronin;Icarus,1964
4. The Bicircular model near the triangular libration points of the RTBP;Simó,1995
5. Dynamics and mission design near libration points. Vol. I, Fundamentals: the case of collinear libration points;Gómez,2001