@article{MAN_1928__98_159238,
     author = {L.W. Nieland},
     title = {\"Uber das {Kreisproblem}},
     journal = {Mathematische Annalen},
     pages = {717--736},
     publisher = {mathdoc},
     volume = {98},
     year = {1928},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1928__98_159238/}
}