%0 Journal Article
%A V. A. Kozlov
%T The strong zero theorem for an elliptic boundary value problem in
%J Doklady Akademii Nauk
%D 1989
%P 1299-1301
%V 309
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_309_6_a3/
%G ru
%F DAN_1989_309_6_a3