1. Orbital Debris;National Research Council,1995
2. National Aeronautics and Space Administration, Orbital debris FAQs. 〈http://www.orbitaldebris.jsc.nasa.gov/faqs.html〉, 2008 (accessed 18.12.08).
3. RAND, National Defense Research Institute, National Space Launch Security Report (Santa Monica, CA: RAND Corporation). 〈http://www.rand.org/pubs/monographs/2006/RAND_MG503.pdf〉, 2006 (last accessed 10.03.09).
4. Risks in space from orbiting debris;Liou;Science,2006
5. Center for Orbital and Reentry Debris Studies, The Aerospace Corporation, “Space debris basics: what is the future trend?”. 〈http://www.aero.org/capabilities/cords/debris-future.html〉, 2004 (last accessed 10.03.09).