@article{JDM_1920__29_145580,
     author = {Karl Kommerell},
     title = {\"Uber nichtaffine {Raumkollineationen.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {1--27},
     publisher = {mathdoc},
     volume = {29},
     year = {1920},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JDM_1920__29_145580/}
}