1. The Hyper-X Flight Systems Validation Program;Redifer,2007
2. Achievements Obtained for Sustained Hypersonic Flight within the LAPCAT Project;Steelant,2008
3. Hyper-X: foundation for future hypersonic launch vehicles;McClinton;Acta Astronaut.,2005
4. The Benefits of Hypersonic Airbreathing Launch Systems for Access to Space;Bilardo,2003
5. TSTO Reusable Launch Vehicles Using Airbreathing Propulsion;Hank,2006