Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_1992_6_3_a4, author = {Laura Burlando}, title = {Generalized {Semi-Fredholm} {Operators} {That} {Belong} to the {Closure} of the {Group} of {Invertible} {Operators}}, journal = {Mathematica balkanica}, pages = {223}, publisher = {mathdoc}, volume = {6}, number = {3}, year = {1992}, url = {http://geodesic.mathdoc.fr/item/MABA_1992_6_3_a4/} }
Laura Burlando. Generalized Semi-Fredholm Operators That Belong to the Closure of the Group of Invertible Operators. Mathematica balkanica, Tome 6 (1992) no. 3, p. 223. http://geodesic.mathdoc.fr/item/MABA_1992_6_3_a4/