%0 Journal Article %A Lars V. Ahlfors %T Old and new in Möbius groups %J Annales Fennici Mathematici %D 1984 %P 93-105 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1984.0901/ %R 10.5186/aasfm.1984.0901 %G en %F AFM_1984_9_1_a6