1. Global assessment of high-altitude wind power;Archer;Energies,2009
2. The Jet Stream. NOAA & The National Weather Service. http://www.srh.noaa.gov/jetstream/global/jet.htm. Accessed February 16, 2010.
3. Bizjak, S. Electrically Powered Glider. United States Patent 2,368,630. Application June 3, 1943. Issued February 1945. http://www.google.com/patents?id=kSheAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false. Accessed February 16, 2010.
4. Fry, C.M. and Hise, H.W. Wind Driven, High Altitude Power Apparatus. United States Patent 4,084,102. Application Jan 19, 1976. Issued Apr 11, 1978. http://www.google.com/patents?hl=en&lr=&vid=USPAT4084102&id=6xwyAAAAEBAJ&oi=fnd&dq=high+altitude+wind+energy&printsec=abstract#v=onepage&q=high%20altitude%20wind%20energy&f=false. Accessed February 16, 2010.
5. Pugh, P.F. Wind Generator Kite System. United States Patent 4,486,669. Application Nov 9, 1981. Issued Dec 4, 1984. http://www.google.com/patents?hl=en&lr=&vid=USPAT4486669&id=9eYyAAAAEBAJ&oi=fnd&dq=high+altitude+wind+energy&printsec=abstract#v=onepage&q=high%20altitude%20wind%20energy&f=false. Accessed February 16, 2010.