%0 Journal Article
%A B. M. Levitan
%T On the expansion according to the eigenfunctions of a self-adjoint partial differential equation
%J Trudy Moskovskogo matematičeskogo obŝestva
%D 1956
%P 269-298
%V 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MMO_1956_5_a4/
%G ru
%F MMO_1956_5_a4