@article{GDZPPN002058871, title = {On Finitely Generated Fuchsian Groups.}, journal = {Commentarii mathematici Helvetici}, volume = {42}, year = {1967}, pages = {81-85}, zbl = {0156.30703}, url = {http://dml.mathdoc.fr/item/GDZPPN002058871} }
Marden, Albert. On Finitely Generated Fuchsian Groups.. Commentarii mathematici Helvetici, Tome 42 (1967) pp. 81-85. http://gdmltest.u-ga.fr/item/GDZPPN002058871/