%0 Journal Article
%A V. Ya. Derr
%T On the question of the sign of the Green's function of a difference problem with combined boundary value conditions
%J Differencialʹnye uravneniâ
%D 1971
%P 1368-1376
%V 7
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_8_a2/
%G ru
%F DE_1971_7_8_a2