Three-dimensional, periodic, ?halo? orbits

Breakwell, J. V. and Brown, J. V.: 1979, ?The ?Halo? Family of 3-Dimensional Periodic Orbits in the Earth-Moon Restricted 3-Body Problem?,Celest. Mech. 20, 389.

Farquhar, R. W.: 1968, ?The Control and Use of Libration-Point Satellites?, Ph. D. Dissertation, Dept. of Aeronautics and Astronautics, Stanford University, Stanford, Calif. U.S.A.

Farquhar, R. W.: 1970, ?The Control and Use of Libration-Point Satellites?, NASA TR R-346.

Farquhar, R. W.: 1972, ?A Halo-Orbit Lunar Station?,Astronautics and Aeronautics, pp. 59?63.

Farquhar, R. W. and Kamel, A. A.: 1973, ?Quasi-Periodic Orbits About the Translunar Libration Point?,Celest. Mech. 7, 458.

Farquhar, R. W., Muhonen, D. P., and Richardson, D. L.: 1977, ?Mission Design for a Halo Orbiter of the Earth?,J. Spacecraft Rockets 14, 170.

Richardson, D. L.: 1979, ?Halo-Orbit Formulation for the ISEE-3 Mission?,AAS Paper, 79?127.