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@article{DAN_1978_239_5_a9, author = {S. N. Naboko}, title = {On the separation of spectral subspaces of a nonselfadjoint operator}, journal = {Doklady Akademii Nauk}, pages = {1052--1055}, publisher = {mathdoc}, volume = {239}, number = {5}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_5_a9/} }
S. N. Naboko. On the separation of spectral subspaces of a nonselfadjoint operator. Doklady Akademii Nauk, Tome 239 (1978) no. 5, pp. 1052-1055. http://geodesic.mathdoc.fr/item/DAN_1978_239_5_a9/