%0 Journal Article
%A V. A. Il'in
%T Riesz means, Cesàro and Poisson–Abel summability of Fourier series of eigenfunctions
%J Differencialʹnye uravneniâ
%D 1966
%P 816-827
%V 2
%N 6
%U http://geodesic.mathdoc.fr/item/DE_1966_2_6_a9/
%G ru
%F DE_1966_2_6_a9