%0 Journal Article %A K. Shiohama %A R.E. Greene %T Convex Functions on Complete Noncompact Manifolds: Topological Structure. %J Inventiones mathematicae %D 1981 %P 129-158 %V 63 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1981__63_142793/ %F IM_1981__63_142793