@article{GDZPPN002393115, title = {Curvature and homology of Riemannian manifolds with boundary.}, journal = {Mathematische Zeitschrift}, volume = {82}, year = {1963}, pages = {67-81}, zbl = {0119.17202}, url = {http://dml.mathdoc.fr/item/GDZPPN002393115} }
Hsiung, Chuan-Chih. Curvature and homology of Riemannian manifolds with boundary.. Mathematische Zeitschrift, Tome 82 (1963) pp. 67-81. http://gdmltest.u-ga.fr/item/GDZPPN002393115/