%0 Journal Article %A Edgar Reich %T On criteria for unique extremality of Teichmüller mappings %J Annales Fennici Mathematici %D 1981 %P 289-301 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1981.0617/ %R 10.5186/aasfm.1981.0617 %G en %F AFM_1981_6_2_a8