%0 Journal Article %A Chuan-Chih Hsiung %T Curvature and homology of Riemannian manifolds with boundary. %J Mathematische Zeitschrift %D 1963 %P 67-81 %V 82 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1963__82_170171/ %F MZ_1963__82_170171