%0 Journal Article %A Peter J. Cameron %T Characterisation of Some Steiner Systems, Parallelisms, and Biplanes. %J Mathematische Zeitschrift %D 1974 %P 31-40 %V 136 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1974__136_172023/ %F MZ_1974__136_172023