@article{MAN_1881__18_156978,
     author = {v. Mangoldt},
     title = {Ueber eine charakteristische {Eigenschaft} der developpabeln {Fl\"achen}},
     journal = {Mathematische Annalen},
     pages = {604--608},
     publisher = {mathdoc},
     volume = {18},
     year = {1881},
     zbl = {13.0582.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1881__18_156978/}
}