@article{MAN_1951__124_160286,
     author = {H. Neumann},
     title = {Eine {Fl\"ache} 2. {Ordnung,} {F2,} durch neun {Punkte} gelegt.},
     journal = {Mathematische Annalen},
     pages = {388--392},
     publisher = {mathdoc},
     volume = {124},
     year = {1951},
     zbl = {0046.38203},
     url = {http://geodesic.mathdoc.fr/item/MAN_1951__124_160286/}
}