1. F. Billig, R. Baurle, and C. Tam, 9th Int. Space Planes and Hyp. Sys. and Tech. Conf., Norfolk, VA (1999).
2. Atmospheric Cruise Flight Challenges for Hypersonic Vehicles Under the Ajax Concept
3. A. Kothari, C. Tarpley, and T. McLaughlin, 32nd Joint Propulsion Conf., Buena Vista, FL (1996).
4. Y. You, 17th AIAA Int. Space Planes and Hyp. Sys. and Tech. Conf., San Francisco, CA (2011).
5. Plastic wrinkling prediction in thin-walled part forming process: A review