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@article{DAN_1984_276_4_a4, author = {T. F. Pankratova}, title = {Quasimodes and splitting of eigenvalues}, journal = {Doklady Akademii Nauk}, pages = {795--799}, publisher = {mathdoc}, volume = {276}, number = {4}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1984_276_4_a4/} }
T. F. Pankratova. Quasimodes and splitting of eigenvalues. Doklady Akademii Nauk, Tome 276 (1984) no. 4, pp. 795-799. http://geodesic.mathdoc.fr/item/DAN_1984_276_4_a4/