%0 Journal Article
%A È. F. Akhmerova
%T Asymptotics of the Spectrum of Nonsmooth Perturbations of Differential Operators of Order $2m$
%J Matematičeskie zametki
%D 2011
%P 833-844
%V 90
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2011_90_6_a2/
%G ru
%F MZM_2011_90_6_a2