1. C. Cercignani, The Boltzmann Equation and its Applications, Springer, New York, 1988.
2. G.A. Bird, Molecular Gas Dynamics, Clarendon, Oxford, 1976; G.A. Bird, Molecular Gas Dynamics and the Direct Simulation of Gas Flows, Clarendon, Oxford, 1994.
3. A.L. Garcia, Numerical Methods for Physics, Prentice Hall, Englewood Cliffs, 1994.
4. E.S. Oran, C.K. Oh, and B.Z. Cybyk, Annu. Rev. Fluid Meek, 30, 403, 1998.
5. M. Fallavollita, D. Baganoff, and J. McDonald, J. Comput. Phys., 109, 30, 1993; G. Chen and I. Boyd, J. Comput. Phys., 126, 434, 1996.