%0 Journal Article %A Konstantin Stathakopoulos %T A Contribution to the Notation of Convexity. I (in German) %J Mathematica balkanica %D 1992 %P 257 %V 6 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1992_6_3_a8/ %F MABA_1992_6_3_a8