%0 Journal Article
%A A. M. Kholkin
%A F. S. Rofe-Beketov
%T On Spectrum of Differential Operator with Block-Triangular Matrix Coefficients
%J Žurnal matematičeskoj fiziki, analiza, geometrii
%D 2014
%P 44-63
%V 10
%N 1
%U http://geodesic.mathdoc.fr/item/JMAG_2014_10_1_a1/
%G en
%F JMAG_2014_10_1_a1