%0 Journal Article %A Ch. L. Terng %T Convexity theorem for isoparametric submanifolds. %J Inventiones mathematicae %D 1986 %P 487-492 %V 85 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1986__85_143378/ %F IM_1986__85_143378