%0 Journal Article %A de Groot, J. %A de Vries, H. %T Convex sets in projective space %J Compositio Mathematica %D 1956-1958 %P 113-118 %V 13 %I Kraus Reprint %U http://archive.numdam.org/item/CM_1956-1958__13__113_0/ %G en %F CM_1956-1958__13__113_0