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2. The first decade of commercial space tourism;Chang;Acta Astronautica,2015
3. Space policy redefined: The Reagan administration and the commercialization of space;Kay;Business and Economic History,1998
4. Commercial Space Launch Competitiveness Act, 51 U.S.C. § 50901 et seq. (1984).
5. Commercial Space Launch Competitiveness Act, 49 U.S.C 70101 & 70105 (2004).