@article{MOMA_1969__73_177450,
     author = {H. Horninger},
     title = {Schraubungen und {Schraublinien} n.ter {Stufe.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {46--62},
     publisher = {mathdoc},
     volume = {73},
     year = {1969},
     zbl = {0167.49902},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1969__73_177450/}
}