TY  - JOUR
AU  - Gonzalez, Manuel
AU  - Martinon, Antonio
TI  - Operational quantities derived from the norm and generalized Fredholm theory
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1991
SP  - 645
EP  - 657
VL  - 32
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1991__32_4_a6/
LA  - en
ID  - CMUC_1991__32_4_a6
ER  -