%0 Journal Article
%A S. S. Shterengas
%T Riesz-summation of fourier series with respect to the eigenfunctions of an abstract operator
%J Matematičeskie zametki
%D 1979
%P 865-873
%V 26
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1979_26_6_a5/
%G ru
%F MZM_1979_26_6_a5