%0 Journal Article
%A V. A. Il'in
%T A necessary condition for equiconvergence of the trigonometric series and of a spectral expansion for an arbitrary integrable function
%J Differencialʹnye uravneniâ
%D 1985
%P 371-379
%V 21
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_3_a0/
%G ru
%F DE_1985_21_3_a0