%0 Journal Article %A Richard K. Skora %T Geometric actions of surface groups on ...-trees. %J Commentarii mathematici Helvetici %D 1990 %P 519-533 %V 65 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140210/ %F CMH_1990__65_3_140210