%0 Journal Article
%A G. V. Zhdanova
%T Asymptotic series for the eigenvalues and eigenfunctions of second order self-adjoint operators
%J Differencialʹnye uravneniâ
%D 1971
%P 603-614
%V 7
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_4_a2/
%G ru
%F DE_1971_7_4_a2