1. A survey of spacecraft formation flying guidance and control (part i): Guidance;Scharf,2003
2. Spacecraft Formation Flying: Dynamics, Control and Navigation;Alfriend,2010
3. H. Schaub, J.L. Junkins, Spacecraft formation flying, in: Analytical Mechanics of Space Systems, second ed., in: AIAA Education Series, Reston, VA, 2009, pp. 593–673, http://dx.doi.org/10.2514/4.105210, Ch. 14.
4. The gravity recovery and climate experiment: Mission overview and early results;Tapley;Geophys. Res. Lett.,2004
5. GGM02 – An improved Earth gravity field model from GRACE;Tapley;J. Geod.,2005