TY  - JOUR
AU  - L. Drewnowski
TI  - Some characterizations of semi-Fredholm operators
JO  - Commentationes Mathematicae
PY  - 1984
SP  -  215
EP  - 218
VL  - 24
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v24i2.6093/
DO  - 10.14708/cm.v24i2.6093
LA  - pl
ID  - 10_14708_cm_v24i2_6093
ER  -