@article{CMH_1937__10_138701,
     author = {A. Speiser},
     title = {Riemann'sche {Fl\"achen} vom hyperbolischen {Typus.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {232--242},
     publisher = {mathdoc},
     volume = {10},
     year = {1937},
     zbl = {64.0317.01},
     url = {http://geodesic.mathdoc.fr/item/CMH_1937__10_138701/}
}