@article{MAN_1889__33_157402,
     author = {Illigens},
     title = {Zur {Weierstrass'-Cantor'schen} {Theorie} der {Irrationalzahlen}},
     journal = {Mathematische Annalen},
     pages = {155--160},
     publisher = {mathdoc},
     volume = {33},
     year = {1889},
     zbl = {20.0067.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1889__33_157402/}
}