%0 Journal Article
%A G. N. Zhevlakov
%A S. A. Pak
%T Conditions for the negativity of the Green's function of a Sturm--Liouville problem for a second order linear ordinary differential equation
%J Differencialʹnye uravneniâ
%D 1969
%P 1114-1119
%V 5
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_6_a14/
%G ru
%F DE_1969_5_6_a14