%0 Journal Article
%A S. A. Telyakovskii
%T Norms of trigonometrical polynomials and approximation of differentiable functions by averages of their Fourier series.~I
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1961
%P 61-97
%V 62
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_1961_62_a2/
%G ru
%F TM_1961_62_a2