1. Antman, S., Liu, T.-P.: Traveling waves in hyperelastic rods. Quart. Appl. Math. (to appear)
2. Chester, W.: The quasi-cylindrical shock tube. Philos. Mag. (7)45, 1293?1304 (1954)
3. Chisnell, P.: The normal motion of a shock wave through a nonuniform one-dimensional medium. Proc. R. Soc. Edinburgh Sect. A323, 350?370 (1955)
4. Conley, C.C., Smoller, J.A.: Shock waves as limits of progressive wave solutions of higher order equation. Comm. Pure Appl. Math.24, 459?472 (1971)
5. Courant, R., Friedrichs, K.O.: Supersonic flow and shock waves. New York: Interscience (1948)