%0 Journal Article
%A V. N. Temlyakov
%T Approximation of periodic functions of several variables by bilinear forms
%J Izvestiya. Mathematics 
%D 1987
%P 133-150
%V 28
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1987_28_1_a6/
%G en
%F IM2_1987_28_1_a6