%0 Journal Article
%A O. M. Penkin
%T On the maximum principle for an elliptic equation on a
%J Doklady Akademii Nauk
%D 1997
%P 462-465
%V 352
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1997_352_4_a6/
%G ru
%F DAN_1997_352_4_a6