@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/