@article{MOMA_1962__66_177169,
     author = {M. Pinl},
     title = {Fl\"achen mit semizirkul\"arer {Dupinscher} {Indikatrix.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {236--240},
     publisher = {mathdoc},
     volume = {66},
     year = {1962},
     zbl = {0104.15801},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1962__66_177169/}
}