1. S. A. Schaaf and P. L. Chambré,Flow of Rarefied Gases, Section II, III,High Speed Aerodynamics and Jet Propulsion, Princeton University Press.
2. F. C. Hurlbut,Aerodynamic Force Coefficient for a Generalized Control Surface in Free-Molecule Flow (unpublished).
3. F. C. Hurlbut,University of California Eng. Proj. Report HE-150–118 (December 1, 1953).
4. E. H. Kennard,Kinetic Theory of Gases (McGraw-Hill Book Company, Inc., New York and London, 1938).
5. B. Friedman,Principles and Techniques of Applied Mathematics ( John Wiley and Sons, Inc., New York. Chapman and Hall, Ltd., London. Second Printing, July 1957).