%0 Journal Article %A Brendle, Simon %A Schoen, Richard %T Manifolds with 1/4-pinched curvature are space forms %J Journal of the American Mathematical Society %D 2009 %P 287-307 %V 22 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-08-00613-9/ %R 10.1090/S0894-0347-08-00613-9 %F 10_1090_S0894_0347_08_00613_9