%0 Journal Article %A Charles M. Stanton %T A Characterization of the Ball by its Intrinsic Metrics. %J Mathematische Annalen %D 1983 %P 271-276 %V 264 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1983__264_163786/ %F MAN_1983__264_163786