@article{RSMUP_1966__36_2_217_0,
author = {Coburn, L. A. and Lebow, A.},
title = {Approximation by Fredholm operators in the metric space of closed operators},
journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
volume = {36},
year = {1966},
pages = {217-222},
mrnumber = {203461},
zbl = {0154.15802},
language = {en},
url = {http://dml.mathdoc.fr/item/RSMUP_1966__36_2_217_0}
}
Coburn, L. A.; Lebow, A. Approximation by Fredholm operators in the metric space of closed operators. Rendiconti del Seminario Matematico della Università di Padova, Tome 36 (1966) pp. 217-222. http://gdmltest.u-ga.fr/item/RSMUP_1966__36_2_217_0/
[1] and : Algebraic theory of Fredholm operators. Jour. Math. Mech. (to appear). | Zbl 0143.16003
[2] and : The invariance of the index in the metric space of closed operators. Jour. Math. Mech., 12 (1963), 693-720. | MR 162142 | Zbl 0148.12402