%0 Journal Article %A S. M. Labovski %T On a necessary and sufficient condition for the negativeness of the Green’s function of a two-point boundary value problem for a functional differential equation %J Vestnik rossijskih universitetov. Matematika %D 2021 %P 382-393 %V 26 %N 136 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTAMU_2021_26_136_a4/ %G ru %F VTAMU_2021_26_136_a4