%0 Journal Article
%A A. I. Koshelev
%T An inequality for elliptic operators of second order with restricted coefficients
%J Doklady Akademii Nauk
%D 1971
%P 17-19
%V 199
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_199_1_a2/
%G ru
%F DAN_1971_199_1_a2