%0 Journal Article
%A G. G. Kazaryan
%T A numerical characteristic of linear differential operators with
%J Doklady Akademii Nauk
%D 1985
%P 1068-1072
%V 283
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1985_283_5_a10/
%G ru
%F DAN_1985_283_5_a10