%0 Journal Article %A Steven C. Ferry %A Shmuel Weinberger %T Curvature, tangentiality, and controlled topology. %J Inventiones mathematicae %D 1991 %P 401-414 %V 105 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1991__105_3_143918/ %F IM_1991__105_3_143918