%0 Journal Article
%A V. A. Il'in
%T Convergence of eigenfunction expansions at points of discontinuity of the coefficients of a~differential operator
%J Matematičeskie zametki
%D 1977
%P 679-698
%V 22
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1977_22_5_a8/
%G ru
%F MZM_1977_22_5_a8