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@article{DAN_1984_279_2_a10, author = {A. Toraev}, title = {Oscillation of elliptic operators and the structure of their}, journal = {Doklady Akademii Nauk}, pages = {306--309}, publisher = {mathdoc}, volume = {279}, number = {2}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1984_279_2_a10/} }
A. Toraev. Oscillation of elliptic operators and the structure of their. Doklady Akademii Nauk, Tome 279 (1984) no. 2, pp. 306-309. http://geodesic.mathdoc.fr/item/DAN_1984_279_2_a10/