@article{MZ_1980__174_173005,
     author = {Peter J. Nicholls},
     title = {Fundmental {Regions} and the {Type} {Problem} for a {Riemann} {Surface.}},
     journal = {Mathematische Zeitschrift},
     pages = {187--196},
     publisher = {mathdoc},
     volume = {174},
     year = {1980},
     zbl = {0423.30038},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__174_173005/}
}