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@article{DAN_1990_313_6_a11, author = {E. A. Larionov}, title = {Localization of eigenvalues and root vectors under weak}, journal = {Doklady Akademii Nauk}, pages = {1331--1334}, publisher = {mathdoc}, volume = {313}, number = {6}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1990_313_6_a11/} }
E. A. Larionov. Localization of eigenvalues and root vectors under weak. Doklady Akademii Nauk, Tome 313 (1990) no. 6, pp. 1331-1334. http://geodesic.mathdoc.fr/item/DAN_1990_313_6_a11/