@article{MAN_1893__42_157654,
     author = {A. Sch\"onflies},
     title = {Ueber {Kreisbogenpolygone.} {(Erste} {Abhandlung)}},
     journal = {Mathematische Annalen},
     pages = {377--408},
     year = {1893},
     volume = {42},
     url = {http://geodesic.mathdoc.fr/item/MAN_1893__42_157654/}
}