@article{1239801384,
author = {OKAZAWA, Noboru},
title = {On the perturbation of linear operators in Banach and Hilbert spaces},
journal = {J. Math. Soc. Japan},
volume = {34},
number = {4},
year = {1982},
pages = { 677-701},
language = {en},
url = {http://dml.mathdoc.fr/item/1239801384}
}
OKAZAWA, Noboru. On the perturbation of linear operators in Banach and Hilbert spaces. J. Math. Soc. Japan, Tome 34 (1982) no. 4, pp. 677-701. http://gdmltest.u-ga.fr/item/1239801384/