%0 Journal Article %A Pekka Tukia %T On two-dimensional quasiconformal groups %J Annales Fennici Mathematici %D 1980 %P 73-78 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1980.0530/ %R 10.5186/aasfm.1980.0530 %G en %F AFM_1980_5_1_a6