1. The limiting speeds of characteristics in relaxation hydrodynamics;Coburn;J. Math. Anal. Appl.,1962
2. The equations of relaxation hydrodynamics;Stupochenko;Soviet Phys.-Doklady,1960
3. Characteristics of the equations of motion of a reacting gas;Broer;J. Fluid Mech.,1958
4. Supersonic Flow and Shock Waves;Courant,1948
5. Sur les écoulements unidemsionnels d'un fluide parfait à entropie faiblement variable;Germain;C. R. Acad. Sci. Paris,1955