%0 Journal Article
%A S. M. Nikol'skii
%T Approximations of periodic functions by trigonometrical polynomials
%J Informatics and Automation
%D 1945
%P 3-76
%V 15
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1945_15_a0/
%G ru
%F TRSPY_1945_15_a0