1. Solid State Physics;Ashcroft,1976
2. Gas Dynamics;Becker,1968
3. Wave Theory and Applications;Bland,1988
4. Propagation of discontinuities in coupled thermoelastic problems;Boley;J. Appl. Mech. (ASME),1968
5. Why are certain nonlinear PDEs both widely applicable and integrable?;Calogero,1991