%0 Journal Article %A P.R. Goodey %A M.M. Woodcock %T A Characterization of Sets of Constant Width. %J Mathematische Annalen %D 1978 %P 15-22 %V 238 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1978__238_163177/ %F MAN_1978__238_163177