@article{JRAM_1890__106_148778,
     author = {G. Frobenius},
     title = {Theorie der biquadratischen {Formeln.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {125--188},
     publisher = {mathdoc},
     volume = {106},
     year = {1890},
     zbl = {22.0158.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1890__106_148778/}
}