@article{MAN_1904__58_158143,
     author = {Adolf Kneser},
     title = {Zur {Proportionslehre}},
     journal = {Mathematische Annalen},
     pages = {583--583},
     publisher = {mathdoc},
     volume = {58},
     year = {1904},
     url = {http://geodesic.mathdoc.fr/item/MAN_1904__58_158143/}
}