1. Fordyce, S W and Brown W C Applications of Free Space Microwave Power Transmission Astronauics and Aeronautics Vol17,Sept 1979, pp5461
2. Brown W C 'A Profile of Power Transmission by Microwaves Astronautics and Aeronautics Vol 17 May 1979 pp 50 55
3. Brown, W C * Design Study for a Ground Microwave Power Transmission System for Use with a High Altitude Powered Plat form NASA CR 168344, June 1983