@article{MAN_1878__13_156806,
     author = {Cremona},
     title = {Ueber die {Polar-} {Hexaeder} bei den {Fl\"achen} dritter {Ordnung}},
     journal = {Mathematische Annalen},
     pages = {301--4},
     publisher = {mathdoc},
     volume = {13},
     year = {1878},
     zbl = {10.0418.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1878__13_156806/}
}