%0 Journal Article %A S. Z. Levendorskiǐ %T The asymptotics of the spectrum of operators that are elliptic in the sense of Douglis--Nirenberg %J Trudy Moskovskogo matematičeskogo obŝestva %D 1989 %P 34-57 %V 52 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1989_52_a1/ %G ru %F MMO_1989_52_a1