%0 Journal Article
%A V. V. Pospelov
%T Approximation of a function of two variables by the sum of products of functions of one variable in Sobolev spaces
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1990
%P 6-10
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1990_4_a1/
%G ru
%F VMUMM_1990_4_a1