%0 Journal Article
%A Václav Zizler
%T On Some Extremal Problems in Banach Spaces.
%J Mathematica Scandinavica
%D 1973
%P 214-224
%V 32
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1973__32_166297/
%F MS2_1973__32_166297