%0 Journal Article
%A Y. S. Ledyaev
%A J. S. Treiman
%A Q. J. Zhu
%T Helly's Intersection Theorem on Manifolds of Nonpositive Curvature
%J Journal of convex analysis
%D 2006
%P 785-798
%V 13
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JCA_2006_13_3_JCA_2006_13_3_a19/
%F JCA_2006_13_3_JCA_2006_13_3_a19