@article{ELMA_1957__12_140667,
     author = {G. Ringel},
     title = {\"Uber {Geraden} in allgemeiner {Lage.}},
     journal = {Elemente der Mathematik},
     pages = {75--82},
     publisher = {mathdoc},
     volume = {12},
     year = {1957},
     zbl = {0078.34501},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1957__12_140667/}
}