1. Chao, C., Schmitt, D., 1989. Eliminating GPS stationkeeping maneuvers by changing the orbit altitude. In: AAS/AIAA Astrodynamics Specialist Conference, Stowe, VT, Paper No. 89-407.
2. Luni-solar effects of geosynchronous orbits at the critical inclination;Delhaise;Celes. Mech. Dyn. Astro.,1993
3. Daniel, N.R., Anna, N., Giacomo, T., 2015. Galileo Constellation: Evaluation of Station Keeping Strategies. .
4. Ely, T.A., 1996. Dynamics and Control of Artificial Satellite Orbits with Multiple Tesseral Resonances. Ph.D. thesis, Purdue University, West Lafayette, IN.
5. Tesseral resonance effects on satellite orbits;Gedeon;Celes. Mech.,1969