1. L. V. Ovsyannikov, Group Analysis of Differential Equations (Nauka, Moscow, 1978; Academic Press, 1982) [in Russian].
2. A. N. Kraiko, Theoretical Gas Dynamics. Classics and Modernity (Torus Press, Moscow, 2010) [in Russian].
3. G. G. Chernyi, Gas Dynamics (Nauka, Moscow, 1988) [in Russian].
4. S. K. Godunov, A. V. Zabrodin, M. Ya. Ivanov, A. N. Kraiko, and G. P. Prokopov, Numerical Solution of Multidimensional Problems of Gas Dynamics (Nauka, Moscow, 1976) [in Russian].
5. A. A. Samarskii and Yu. P. Popov, Difference Methods for Solving Problems of Gas Dynamics (Nauka, Moscow, 1980) [in Russian].