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Sources

http://www.networkworld.com/community/node/77436

http://www.csm-ea.com/

http://www.theweatherspace.com/news/TWS-08_10_2011_htv2.html

http://www.darpa.mil/NewsEvents/Releases/2011/2011/08/11DARPA_HYPERSONIC_VEHICLE_ADVANCES_TECHNICAL_KNOWLEDGE.aspx