@article{AM2_1987__34_137245,
     author = {Martin Barner},
     title = {Eine differentialgeometrische {Kennzeichnung} der allgemeinen {Dupinschen} {Zykliden.}},
     journal = {Aequationes mathematicae},
     pages = {277--286},
     publisher = {mathdoc},
     volume = {34},
     year = {1987},
     zbl = {0633.53016},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__34_137245/}
}