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Theory of elastic waves |
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| Authors: | A. I. Olemskoi |
| Affiliation: | 1. Balakovo Branch, Saratov Polytechnic Institute, USSR |
| Abstract: | Wave processes in real crystals are described by covariant first-order partial differential equations. Naimi and Khzardzhyan [1] have recently shown that the second-order equations $$Delta u^{(n)} - c_n^{ - 2} partial ^2 u^{(n)} /partial t^2 = 0$$ , |
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