@article{GDZPPN002067749, title = {Geometric actions of surface groups on ...-trees.}, journal = {Commentarii mathematici Helvetici}, volume = {65}, year = {1990}, pages = {519-533}, zbl = {0724.57008}, url = {http://dml.mathdoc.fr/item/GDZPPN002067749} }
Skora, Richard K. Geometric actions of surface groups on ...-trees.. Commentarii mathematici Helvetici, Tome 65 (1990) pp. 519-533. http://gdmltest.u-ga.fr/item/GDZPPN002067749/