@article{ELMA_1949__4_140506,
     author = {P. Buchner},
     title = {Geometrischer {Ort} dritter {Ordnung.}},
     journal = {Elemente der Mathematik},
     pages = {49--51},
     publisher = {mathdoc},
     volume = {4},
     year = {1949},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1949__4_140506/}
}