%0 Journal Article
%A Antonio J. Guirao
%A Olena Kozhushkina
%T The Bishop–Phelps–Bollobás property for
 numerical radius in $\ell _{1}(\mathbb {C})$
%J Studia Mathematica
%D 2013
%P 41-54
%V 218
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm218-1-3/
%R 10.4064/sm218-1-3
%G en
%F 10_4064_sm218_1_3