1. KIRSCHNER, M., MONTENBRUCK, O., and BETTADPUR, S. “Flight Dynamics Aspects of the GRACE Formation Flying,” 2nd International Workshop on Satellite Constellations and Formation Flying, CNES, Haifa, Israel, February 2001.
2. HOW, J. P. and TILLERSON, M. “Analysis of the Impact of Sensor Noise on Formation Flying Control,” Proceedings of the American Control Conference, 2001, pp. 3986–3991.
3. CARPENTER, J. R. and SCHIESSER, E. R. “Semimajor Axis Knowledge and GPS Orbit Determination,” NAVIGATION: Journal of The Institute of Navigation, Vol. 48, No. 1, Spring 2001, pp. 57–68, also presented as paper AAS 99–190, at the AAS/AIAA Space Flight Mechanics Meeting, February 7–10, 1999, Breckenridge, Colorado.
4. INALHAN, G., TILLERSON, M., and HOW, J. P. “Relative Dynamics and Control of Spacecraft Formations in Eccentric Orbits,” Journal of Guidance, Control, and Dynamics, Vol. 25, No. 1, 2002, pp. 48–59.
5. LEAR, W.M. “Orbital Elements Including the J2 Harmonic,” Technical Report 86–FM–18, JSC–22213, Rev. 1, Mission Planning and Analysis Divison, NASA Johnson Space Center, Houston, TX, 1987.