%0 Journal Article
%A Yang Guang-wu
%A Xu Ke-ming
%T Uniqueness and stability of the solution of a problem with a directional derivative for a second-order equation of elliptic type
%J Differencialʹnye uravneniâ
%D 1997
%P 570-572
%V 33
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1997_33_4_a23/
%G ru
%F DE_1997_33_4_a23