@article{01780538,
title = {Continuity and general perturbation of the Drazin inverse for closed linear operators.},
journal = {Abstract and Applied Analysis},
volume = {7},
year = {2002},
pages = {335-347},
doi = {10.1155/S1085337502002890},
zbl = {1009.47002},
language = {en},
url = {http://dml.mathdoc.fr/item/01780538}
}
Castro González, N.; Koliha, J.J.; Rakočević, V. Continuity and general perturbation of the Drazin inverse for closed linear operators.. Abstract and Applied Analysis, Tome 7 (2002) pp. 335-347. doi : 10.1155/S1085337502002890. http://gdmltest.u-ga.fr/item/01780538/