1. Risks in space from orbiting debris;Liou;Science,2006
2. B.S. Aaron, Geosynchronous satellite maneuver detection and orbit recovery using ground based optical tracking, Masters Thesis, Massachusetts Institute of Technology, 2006.
3. J. Wright, Optimal Orbit Determination, Analytical Graphics, Inc., internal white paper, 2002.
4. R.S. Hujsak, J.W. Woodburn, J.H. Seago, The Orbit Determination Tool Kit (ODTK)—Version 5, AAS 07-125, in: AAS Astrodynamics Specialist Conference, Mackinac Island, MI, August 2007.
5. R.S. Hujsak, Reverse Engineering Maneuvers, Briefing from the AGI 2005 User's Conference, Washington DC, October 13, 2005.