%0 Journal Article %A Chun Cao %T The chordal norm of discrete Möbius groups in several dimensions %J Annales Fennici Mathematici %D 1996 %P 271-287 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_1996_21_2_a2/ %G en %F AFM_1996_21_2_a2