@article{MOMA_1962__66_177155,
     author = {H. Brauner},
     title = {Eine {Scherungsinvariante} der {Strahlfl\"achen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {105--109},
     publisher = {mathdoc},
     volume = {66},
     year = {1962},
     zbl = {0105.34503},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1962__66_177155/}
}