1. J. Berryman, H. Schaub, Analytical charge analysis for 2- and 3-craft Coulomb formations, in: AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, 2005, paper No. 05-278
2. J. Berryman, H. Schaub, Static equilibrium configurations in geo Coulomb spacecraft formations, in: AAS/AIAA Space Flight Mechanics Meeting, Copper Mountain, Colorado, 2005, paper No. AAS 05-104
3. Terminal guidance system for satellite rendezvous;Clohessy;Journal of the Aerospace Sciences,1960
4. Physics of the Space Environment;Gombosi,1998
5. Researches in the lunar theory;Hill;American Journal of Mathematics,1878