%0 Journal Article %A Benedict H. Gross %T Intersection Triangles and Block Intersection Numbers of Steiner Systems. %J Mathematische Zeitschrift %D 1974 %P 87-104 %V 139 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1974__139_172114/ %F MZ_1974__139_172114