%0 Journal Article
%A A. Yu. Levin
%A Yu. I. Petunin
%T Some problems related to the concept of orthogonality in a Banach space
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1963
%V 18
%N 3
%U http://geodesic.mathdoc.fr/item/RM_1963_18_3_a7/
%G ru
%F RM_1963_18_3_a7