1. https://en.wikipedia.org/wiki/Wingsuit flying.
2. Abrams, M.: Birdmen Batmen, and Sky-Flyers: Wingsuits and the Pioneers Who Flewin Them, Fell in Them, and Perfected Them. Harmony Books, New York (2006)
3. Weed, W. S.: The Flight of the Bird Men, Popular Science, 18 June 2003
4. Available:http://www.popsci.com/military-aviation-space/article/2003-06/flight-bird-men, [Accessed on 20 April 2015].
5. Lamb, R.: How Wingsuit Flying Works, HowStuffWorks, [Online]. Available: http://adventure.howstuffworks.com/wingsuitflying.htm, [Accessed on 3 March 2015].