%0 Journal Article %A Günter Ewald %A Geoffrey C. Shephard %T Normed vector spaces consisting of classes of convex sets. %J Mathematische Zeitschrift %D 1966 %P 1-19 %V 91 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1966__91_170501/ %F MZ_1966__91_170501