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@article{IM_1989__98_1_143726, author = {K. Shiohama and Y. Otsu and T. Yamaguchi}, title = {A new version of differentiable sphere theorem.}, journal = {Inventiones mathematicae}, pages = {219--228}, publisher = {mathdoc}, volume = {98}, number = {1}, year = {1989}, zbl = {0688.53016}, url = {http://geodesic.mathdoc.fr/item/IM_1989__98_1_143726/} }
K. Shiohama; Y. Otsu; T. Yamaguchi. A new version of differentiable sphere theorem.. Inventiones mathematicae, Tome 98 (1989) no. 1, pp. 219-228. http://geodesic.mathdoc.fr/item/IM_1989__98_1_143726/