@article{MZ_1921__9_167611,
     author = {M., Torhorst},
     title = {\"Uber den {Rand} der einfach zusammenh\"angenden ebenen {Gebiete}},
     journal = {Mathematische Zeitschrift},
     pages = {44--65},
     publisher = {mathdoc},
     volume = {9},
     year = {1921},
     zbl = {48.0653.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1921__9_167611/}
}