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2. Non-linear stress waves in metals;Herrmann,1969
3. Wave propagation in non-linear viscoelastic solids;Nunziato,1974
4. Stress waves in a viscoplastic medium;Skobeev;Inzh. Zh. Mekh. Tverd. Tela.,1967
5. Existence of steady waves for a class of non-linear dissipative materials;Greenberg;Q. Appl. Math.,1968