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2. Wertz J.R., Larson W.J. (Eds.), Space Mission Analysis and Design, 3rd ed., Microcosm Press, California, 1999
3. Navy missile hits dying spy satellite, Navy says, CNN.com , February 21, 2008, available at: http://www.cnn.com/2008/TECH/space/02/20/satellite.shootdown/index.html
4. Interorbital, http://Hww.interorbital.com/TubeSat_1.htm
5. Helvajian H., Janson S.W. (Eds.), Small Satellites: Past, Present, and Future, AIAA, Reston, Virginia, 2009