%0 Journal Article
%A V. V. Barkovskii
%T Expansion in the eigenfunctions of two pseudodifferential operators
%J Differencialʹnye uravneniâ
%D 1974
%P 276-280
%V 10
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1974_10_2_a12/
%G ru
%F DE_1974_10_2_a12