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@article{DAN_1987_295_6_a17, author = {M. R. Levitin}, title = {On the spectrum of natural oscillations of a shell filled with a}, journal = {Doklady Akademii Nauk}, pages = {1355--1358}, publisher = {mathdoc}, volume = {295}, number = {6}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1987_295_6_a17/} }
M. R. Levitin. On the spectrum of natural oscillations of a shell filled with a. Doklady Akademii Nauk, Tome 295 (1987) no. 6, pp. 1355-1358. http://geodesic.mathdoc.fr/item/DAN_1987_295_6_a17/