%0 Journal Article
%A O. A. Veliev
%T The spectrum and spectral singularities of differential operators with periodic complex-valued coefficients
%J Differencialʹnye uravneniâ
%D 1983
%P 1316-1324
%V 19
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1983_19_8_a3/
%G ru
%F DE_1983_19_8_a3