@article{MAN_1869__1_156409,
     author = {P. Harbordt},
     title = {Das simultane {System} einer biquadratischen und einer quadratischen bin\"aren {Form.} {Von} {P.} {Harbordt} in {Giessen}},
     journal = {Mathematische Annalen},
     pages = {210--224},
     publisher = {mathdoc},
     volume = {1},
     year = {1869},
     zbl = {02.0065.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1869__1_156409/}
}