%0 Journal Article
%A G. M. Kesel'man
%T A second order nonselfadjoint differential operator on the half axis
%J Differencialʹnye uravneniâ
%D 1969
%P 1700-1714
%V 5
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_9_a15/
%G ru
%F DE_1969_5_9_a15