1. S. A. Schaaf and P. L. Chambre, “Flow of Rarefied Gases,” Vol. III, Part H,High Speed Aerodynamics and Jet Propulsion Series(Princeton University Press, Princeton, New Jersey, 1958).
2. F. C. Hurlbut (to be published).
3. The Thermal Accommodation Coefficient: A Critical Survey
4. N. F. Ramsey,Molecular Beams(Oxford University Press, New York, 1956).