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@article{CMH_1990__65_3_140210, author = {Richard K. Skora}, title = {Geometric actions of surface groups on ...-trees.}, journal = {Commentarii mathematici Helvetici}, pages = {519--533}, publisher = {mathdoc}, volume = {65}, number = {3}, year = {1990}, zbl = {0724.57008}, url = {http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140210/} }
Richard K. Skora. Geometric actions of surface groups on ...-trees.. Commentarii mathematici Helvetici, Tome 65 (1990) no. 3, pp. 519-533. http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140210/