%0 Journal Article
%A V. V. Andrievskii
%T On~approximation of functions by harmonic polynomials
%J Izvestiya. Mathematics 
%D 1988
%P 1-13
%V 30
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1988_30_1_a0/
%G en
%F IM2_1988_30_1_a0