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@article{DAN_1964_155_4_a18, author = {F. I. Fedorov}, title = {An approximate general theory of elastic waves in crystals}, journal = {Doklady Akademii Nauk}, pages = {792--794}, publisher = {mathdoc}, volume = {155}, number = {4}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_155_4_a18/} }
F. I. Fedorov. An approximate general theory of elastic waves in crystals. Doklady Akademii Nauk, Tome 155 (1964) no. 4, pp. 792-794. http://geodesic.mathdoc.fr/item/DAN_1964_155_4_a18/