1. C. S. Wang Chang and G. E. Uhlenbeck, “On the propagation of sound in monatomic gases,” Engineering Research Institute, University of Michigan, Ann Arbor Project M999 (October, 1952), and a series of reports dealing with boundary value problems.
2. S. Chapman and T. G. Cowling,The Mathematical Theory of Nonuniform Gases(Cambridge University Press, New York, 1953).
3. A Model for Collision Processes in Gases. I. Small Amplitude Processes in Charged and Neutral One-Component Systems
4. Boundary value problems in kinetic theory of gases