1. Flohrer T., Peltonen J., Kramer A., et al., Space-based Optical Observations of Space Debris, Proceedings of the 4th European Conference on Space Debris, Darmstadt, 2005 April 18-20 .
2. Maskell .P, Oram L., Proceedings of the Advanced Maui Optical and Space Surveillance Technologies Conference, 2008, E5 .
3. Orbits and Detection of Man-made Satellites and Space Debris;WU,2011