%0 Journal Article %A A. N. Kozhevnikov %T An estimate of the remainder in the asymptotics of the spectrum and complex powers of systems elliptic in the sense of Douglis and Nirenberg %J Doklady Akademii Nauk %D 1980 %P 32-35 %V 254 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_254_1_a6/ %G ru %F DAN_1980_254_1_a6