1. Nonlinear wave motion in magnetohydrodynamics;Friedrichs;Los Alamos Report 2105,1957
2. Sur les écoulements unidimensionnels d'un fluide parfait à entropie faiblement variable;Germain;Compt. Rend. acad. sci., Paris,1955
3. The flow of a compressible fluid with weak entropy changes;Gundersen;J. Fluid Mech.,1958
4. The non-isentropic perturbation of an arbitrary simple wave;Gundersen;J. Math. Mech.,1960
5. Simple wave flow in ducts;Gundersen;Phys. Fluids,1959