1. Hypersonic flight and the Re-entry problem,” the twenty-first wright brothers lecture;Julian Allen;J Aero Sci,1958
2. A study of composite propulsion systems for advanced launch vehicle applications;Escher,1966
3. Conceptual design of a mach 10, global reach reconnaissance aircraft;Bogar,1996
4. The benefits of hypersonic airbreathing launch systems for access to space;Bilardo,2003
5. Combined rocket and airbreathing propulsion systems for space-launch applications;Daines;J Propul Power,1998