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2Lewis D. Solomon, The Privatization of Space Exploration: Business, Technology, Law, and Policy, New Brunswick: Transaction Publishers, 2008.
3Chris Dubbs and Emeline Paat-Dahlstrom, Realizing Tomorrow: The Path to Private Spaceflight, Lincoln and London: U- niversity of Nebraska Press, 2011.
4Greg Klerkx, "The Alt. Space Race," New Scientist, Vo1.195, No. 2620, 2007, pp.55-58.
5David Salt, "NewSpace--Delivering on the Dream," Acta Astronautica, Vol.92, No.2, 2013, pp. 178-186.
6Roger Handberg, "Building the New Economy: ' NewSpace' and State Spaceports, " Technology in Society, Vol.39, 2014, pp.117-128.
