%0 Journal Article
%A M.-B. Babayev
%T The approximation of sobolev classes of functions by sums of products of functions of fewer variables
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1987
%P 30-32
%V 180
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_1987_180_a8/
%G ru
%F TM_1987_180_a8