%0 Journal Article
%A N. N. Zaderei
%A A. I. Stepanets
%T Approximation of Fourier sums on classes of periodic functions that are defined by polyharmonic operators
%J Matematičeskie zametki
%D 1980
%P 569-581
%V 27
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1980_27_4_a7/
%G ru
%F MZM_1980_27_4_a7