%0 Journal Article %A James Roberts %T A compact convex set with no extreme points %J Studia Mathematica %D 1977 %P 255-266 %V 60 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-60-3-255-266/ %R 10.4064/sm-60-3-255-266 %G en %F 10_4064_sm_60_3_255_266