1. C. Cercignani, Theory and Applications of the Boltzmann Equation, Elsevier, New York (1975).
2. M. N. Kogan, Dynamics of a Rarefied Gas [in Russian], Nauka, Moscow (1967).
3. P. L. Bhatnagar, E. P. Gross, and M. Krook, Phys. Rev., 94, 511–525 (1954).
4. N. B. Engibaryan and A. Kh. Khachatryan, Matem. Mod., 16, 67–74 (2004).
5. N. B. Engibaryan and A. Kh. Khachatryan, Comput. Math. Math. Phys., 38, 452–467 (1998).