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References
- 1 2 Aviation Week & Space Technology, Volume 98 (1973), page 67
- 1 2 Parsch, Andreas (2004). "Martin Marietta 845A". Directory of U.S. Military Rockets and Missiles Appendix 4: Undesignated Vehicles. Designation-Systems. Retrieved 2017-11-09.
- ↑ Robinson, Anthony (1979). The Illustrated encyclopedia of aviation. Vol. 8. London: Marshall Cavendish. p. 854. ISBN 978-0856855818.
- ↑ Winn, William (20 April 1993). "Aircraft Measurement of Electric Field: Self-Calibration". J. Geophys. Res. 98 (D4): 7351–7365. Bibcode:1993JGR....98.7351W. doi:10.1029/93JD00165.
- This article contains material that originally came from the web article Unmanned Aerial Vehicles by Greg Goebel, which exists in the Public Domain.