%0 Journal Article
%A A. I. Domoshnitskii
%T Preserving the sign of the Green function of a two-point boundary value problem for an $n$th-order functional-differential equation
%J Differencialʹnye uravneniâ
%D 1989
%P 934-937
%V 25
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_6_a2/
%G ru
%F DE_1989_25_6_a2