%0 Journal Article %A Mika Seppälä %A Tuomas Sorvali %T Leftings of Möbius groups to matrix groups. %J Mathematica Scandinavica %D 1993 %P 223-234 %V 72 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1993__72_1_167247/ %F MS2_1993__72_1_167247