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2. Ya. B. Zeldovich and Yu. P. Raizer, Physics of shock waves and high-temperature hydrodynamic phenomena (Transl. from Russian by W. D. Hayes and R. F. Probstein), Academic Press, New York, 1966
3. A family of exact solutions of one-dimensional anisentropic flow;Weir, D. G.;Proc. Cambridge Philos. Soc.,1961