%0 Journal Article %A B. Grünbaum %T On some properties of convex sets %J Colloquium Mathematicum %D 1961 %P 39-42 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-8-1-39-42/ %R 10.4064/cm-8-1-39-42 %G en %F 10_4064_cm_8_1_39_42