%0 Journal Article
%A A. A. Stakun
%T On the properties of a differential operator with a multiple turning point
%J Differencialʹnye uravneniâ
%D 1987
%P 993-999
%V 23
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_6_a7/
%G ru
%F DE_1987_23_6_a7