TY  - JOUR
AU  - Micheál Ó. Searcóid
TI  - Economical Finite Rank Perturbations of Semi-Fredholm Operators.
JO  - Mathematische Zeitschrift
PY  - 1988
SP  - 431
EP  - 434
VL  - 198
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1988__198_3_173936/
ID  - MZ_1988__198_3_173936
ER  -