1. Koppenwallner, G.: Rarefied Gas Dynamics. Notes, 1st Joint Europe-US Short Course on Hypersonics. ESA, Paris, Dec.7-11. 1987.
2. Arrington, J.P.; Jones, J.J. (Eds.): Shuttle Performance: Lessons learned. Part land 11. NASA CP 2283, 1983.
3. Peterson, V.L.; Bailey, F.R.: Close to Real Life. Aerospace America, 18–24, July 1988.
4. Wake, A.J.: Hypersonic Aerodynamics-Applications for HOTOL. AGARD CP-428, Paper 34, 1987.
5. Koelle, D.E. and Kuczera, H.: Sänger Space Transportation System-Status Report 1988. Paper IAF-88-192, Oct. 1988.