@article{MAN_1889__33_157421,
     author = {K\"upper},
     title = {Der {Satz} von {Pohlke}},
     journal = {Mathematische Annalen},
     pages = {474--475},
     publisher = {mathdoc},
     volume = {33},
     year = {1889},
     url = {http://geodesic.mathdoc.fr/item/MAN_1889__33_157421/}
}