[1] Kites Flying in High-altitude Winds Could Provide Clean Electricity, http://phys.org/news165082424.html (accessed Jul 5, 2013)
[2] L.Archer, Cristina, and Ken Caldeira. “Global Assessment of High Altitude Wind Turbine.” Energies Journal 2(2009), pp. 307-19.
[3] Exploring Wind Energy Student Guide, www.need.org (accessed July 25, 2007).
[4] Wikipedia encyclopedia, “Jet streams”, http://en.wikipedia.org/wiki/Jet_stream (accessed July 7, 2013).
[5] High-altitude winds: The greatest source of concentrated energy on Earth, http://news.stanford.edu/news/2009/june24/high-altitude-winds-062309.html (accessed June 23, 2009).
[6] High-Flying Researchers Target Jet Stream Wind Energy, http://www.businessgreen.com/bg/news/1800976/high-flying-researchers-target-jet-stream-wind-energy (accessed June 18, 2009).
[7] Principles of Flying-Understanding Jet Streams, http:/bit.ly/6E4fbW (accessed January 26, 2010).
[8] Wind-Generated Renewable Energy the Sky’s the Limit, http://heatusa.com/blog/category/renewable-energy (accessed June 17, 2009).
[9] High Altitude Wind power, http://www.energykitesystems.net NASA High Altitude Wind Power Dave North.pdf
[10] Canale, Massimo, Lorenzo Fagiano, and Mario Milanese. “Power Kites for Wind Energy Generation, Fast Predictive Control of Tethered Airfoils.” IEEE Control Systems Magazine (2007), pp.25-38.
[11] W. Roberts, Bryan, David H.Shepard, M. Elizabeth Cannon, and David G.Eccles. “Harnessing High Altitude Wind Power.” http://www.aweconsortium.org/public/downloads/resources/roberts_et_al.pdf (accessed July 17, 2007).
[13] High Altitude Wind Power, http://newenergydirection.com/blog/2009/06/high-altitude-wind-power/ (accessed June 20, 2009).
[14] Windmills in the Sky, http://www.popsci.com/scitech/article (accessed November 21, 2005).
[15] Krenciszek J., Akindeinde S.O., Braun H., Clement M., and Okyere E. “Mathematical Modeling of the Pumping Kite Wind Generator: Optimization of the Power Output.” Tempere University of Technology, 2008.
[16] Bolonkin Alexander. “Utilization of Wind Energy at High Altitude.” AIAA Journal 3, 2008.
[17] Fagiano L. “Kitves Project, Controlled Airfoils for Vessel on-Board Energy Production.” Katholieke Universiteit Leuven, 2008.
[18] Ockels W.J, Podgates A.R., "Flight Control of the High Altitude Wind Power System", Paper presented at the 7th Conference on Sustainable Applications for tropical Island States, USA, June 3-6, 2007.
[19] Canale Massimo, Lorenzo Fagiano, and Mario Milanese. ”High Altitude Wind Energy Generation Using Controlled Power Kites.” IEEE Transactions on Control Systems Technology, 2010.
[21] Fagiano Lorenzo,” High Altitude Wind Energy Generation.” University of Colorado, 2011.
[22] Fagiano, L., Milane M., and Piga D. “High-Altitude Wind Power Generation for Renewable Energy Cheaper than Oil.” Dipartimento di Automatica e Informatica, Politecnico di Torino, Torino, Italy, 2009.
[23] Fagiano, L. “Control of Tethered Airfoils for High Altitude Wind Energy Generation.” PhD diss., Politacnico DI Torino, 2009.
[24] Fagiano L., Milanese M., Piga D.” Optimization of High Altitude Wind Energy Generators.” Paper presented at the Airborne Wind Energy Conference, USA, September 29, 2010.
[25] Lansdorp Bas, and Paul Williams.” The Ladder mill- Innovative Wind Energy from High Altitudes in Holland and Australia.” Windpower 06, Adelaide, Australia (2006).
[26] Lansdorp Bas, and Ockels W.J. “Comparison of Concept for High Altitude Wind Energy Generation with ground Based Generator", Paper presented at the 2nd China International Renewable Energy Equipment & Technology Exhibition and Conference, Beijing, 2005.
[27] High-altitude flying wind generators can solve the energy crisis, http://www.ecofriend.com/high-altitude-flying-wind-generators-can-solve-the-energy-crisis.html (accessed July 18, 2007).
)
