%0 Journal Article %A Mark McConnell %T Classical projective geometry and arithmetic groups. %J Mathematische Annalen %D 1991 %P 441-462 %V 290 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1991__290_4_164826/ %F MAN_1991__290_4_164826