%0 Journal Article
%A L. N. Labunets
%T Approximation of periodic functions by partial sums of Fourier series, for classes that are defined by a~polyharmonic operator
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1973
%P 56-67
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1973_3_a8/
%G ru
%F IVM_1973_3_a8