TY  - JOUR
AU  - Anders Olofsson
TI  - An extremal problem in Banach algebras
JO  - Studia Mathematica
PY  - 2001
SP  - 255
EP  - 264
VL  - 145
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm145-3-5/
DO  - 10.4064/sm145-3-5
LA  - de
ID  - 10_4064_sm145_3_5
ER  -