@article{JRAM_1955__194_150280,
     author = {Helga Schirmer},
     title = {Mindestzahlen von {Koinzidenzpunkten.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {21--39},
     publisher = {mathdoc},
     volume = {194},
     year = {1955},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1955__194_150280/}
}