@article{ELMA_1957__12_140662,
     author = {H. Brauner and R. Bereis},
     title = {Schraubung und {Netzprojektion.}},
     journal = {Elemente der Mathematik},
     pages = {33--41},
     publisher = {mathdoc},
     volume = {12},
     year = {1957},
     zbl = {0077.14601},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1957__12_140662/}
}