1. C.A. Jones, Unmanned aerial vehicles: an assessment of historical operations and future possibilities, Thesis Research Paper, Air Command and Staff College, 1997.
2. T. Ehrhard, The US Air Force and unmanned aerial vehicles, Ph.D. Dissertation, Johns Hopkins University, 1999.
3. New demonstrator spurs Navy UCAV development, Aviation Week and Space Technology, February 2001.
4. S.A. Whitmore, M. Fife, L. Brasher, Development of strapdown attitude system for an ultrahigh altitude flight experiment, NASA TM-4775, January 1997.
5. G.M. Siouris, Aerospace Avionics Systems: A Modern Synthesis, Academic Press, New York, 1993.