On the spectrum of normal operators and perturbations of them
Doklady Akademii Nauk, Tome 158 (1964) no. 5, pp. 1042-1043
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@article{DAN_1964_158_5_a9,
author = {Karl-Peter Hadeler},
title = {On the spectrum of normal operators and perturbations of them},
journal = {Doklady Akademii Nauk},
pages = {1042--1043},
year = {1964},
volume = {158},
number = {5},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_5_a9/}
}
Karl-Peter Hadeler. On the spectrum of normal operators and perturbations of them. Doklady Akademii Nauk, Tome 158 (1964) no. 5, pp. 1042-1043. http://geodesic.mathdoc.fr/item/DAN_1964_158_5_a9/