%0 Journal Article
%A F. G. Maksudov
%T On the spectrum of singular non-selfadjoint differential operators of order~$2n$
%J Doklady Akademii Nauk
%D 1963
%P 758-761
%V 153
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_153_4_a4/
%G ru
%F DAN_1963_153_4_a4