@article{1103039110,
author = {Goldberg, Seymour},
title = {Ranges and inverses of perturbed linear operators.},
journal = {Pacific J. Math.},
volume = {9},
number = {4},
year = {1959},
pages = { 701-706},
language = {en},
url = {http://dml.mathdoc.fr/item/1103039110}
}
Goldberg, Seymour. Ranges and inverses of perturbed linear operators.. Pacific J. Math., Tome 9 (1959) no. 4, pp. 701-706. http://gdmltest.u-ga.fr/item/1103039110/