%0 Journal Article
%A V. A. Kofanov
%T Approximation in the mean of classes of differentiable functions by algebraic polynomials
%J Izvestiya. Mathematics 
%D 1984
%P 353-365
%V 23
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1984_23_2_a5/
%G en
%F IM2_1984_23_2_a5