@article{1077315386, author = {Greene, R. E. and Wu, H.}, title = {Gap theorems for noncompact Riemannian manifolds}, journal = {Duke Math. J.}, volume = {49}, number = {1}, year = {1982}, pages = { 731-756}, language = {en}, url = {http://dml.mathdoc.fr/item/1077315386} }
Greene, R. E.; Wu, H. Gap theorems for noncompact Riemannian manifolds. Duke Math. J., Tome 49 (1982) no. 1, pp. 731-756. http://gdmltest.u-ga.fr/item/1077315386/