@article{MAN_1880__17_156907,
     author = {in Karlsruhe. Wedekind},
     title = {Das {Doppelverh\"altniss} und die absolute {Invariante} bin\"arer biquadratischer {Formen}},
     journal = {Mathematische Annalen},
     pages = {1--20},
     publisher = {mathdoc},
     volume = {17},
     year = {1880},
     zbl = {12.0087.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1880__17_156907/}
}