%0 Journal Article
%A V. A. Kondratiev
%A S. D. Èidel'man
%A T. G. Pletneva
%T On positive solutions of partial differential equations in a neighborhood of a smooth noncharacteristic hypersurface
%J Doklady Akademii Nauk
%D 1972
%P 279-282
%V 204
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_204_2_a4/
%G ru
%F DAN_1972_204_2_a4