%0 Journal Article
%A G. I. Natanson
%T Approximation of discontinuous functions by Fourier sums
%J Doklady Akademii Nauk
%D 1968
%P 1033-1036
%V 180
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_180_5_a3/
%G ru
%F DAN_1968_180_5_a3