TY  - JOUR
AU  - Laura Burlando
TI  - Generalized Semi-Fredholm Operators That Belong to the Closure of the Group of Invertible Operators
JO  - Mathematica balkanica
PY  - 1992
SP  - 223
VL  - 6
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1992_6_3_a4/
ID  - MABA_1992_6_3_a4
ER  -