TY  - JOUR
AU  - Antonio J. Guirao
AU  - Olena Kozhushkina
TI  - The Bishop–Phelps–Bollobás property for
 numerical radius in $\ell _{1}(\mathbb {C})$
JO  - Studia Mathematica
PY  - 2013
SP  - 41
EP  - 54
VL  - 218
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm218-1-3/
DO  - 10.4064/sm218-1-3
LA  - en
ID  - 10_4064_sm218_1_3
ER  -