@article{JDM_1909__18_145179,
     author = {P. Wernicke},
     title = {Die {Zahl} der ordin\"aren {Kollineationstypen.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {397--398},
     publisher = {mathdoc},
     volume = {18},
     year = {1909},
     zbl = {40.0177.01},
     url = {http://geodesic.mathdoc.fr/item/JDM_1909__18_145179/}
}