%0 Journal Article
%A V. L. Velikin
%T Approximation in a~Banach space by a~convergent sequence of subspaces of fixed dimension
%J Informatics and Automation
%D 1987
%P 81-82
%V 180
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a42/
%G ru
%F TRSPY_1987_180_a42