Ilan Kroo and Eric Beckman, with Brian Robbins, Steve Morris, and Brian Porter; "Development of the SWIFT: A Tailless Foot-Launched Sailplane", Hang Gliding, January 1991. IHPA online copy (retrieved 22 July 2020), Stanford online copy. (retrieved 22 July 2020)
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aero.stanford.edu
Ilan Kroo and Eric Beckman, with Brian Robbins, Steve Morris, and Brian Porter; "Development of the SWIFT: A Tailless Foot-Launched Sailplane", Hang Gliding, January 1991. IHPA online copy (retrieved 22 July 2020), Stanford online copy. (retrieved 22 July 2020)