1. Scientific American;JV Becker,1961
2. NASA TR-55;DR Chapman,1960
3. The RAND Corporation Report;C Gazley,1960
4. Loh, W. H. T.: Dynamics and Thermodynamics of Re-Entry, Journal of the Aerospace Science, October, 1960.
5. Loh, W. H. T.: Minor Circle Flight for Boost Glide Vehicles, ARS Journal, 29:4, April, 1959.