%0 Journal Article
%A Per Enflo
%T A counterexample to the approximation problem in Banach spaces
%J Matematika
%D 1974
%P 146-155
%V 18
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAT_1974_18_1_a8/
%G ru
%F MAT_1974_18_1_a8