@article{MAN_1959__137_160674,
     author = {P. WILKER},
     title = {Invariante {Grundlegung} des affinen {Raumes.}},
     journal = {Mathematische Annalen},
     pages = {107--124},
     publisher = {mathdoc},
     volume = {137},
     year = {1959},
     zbl = {0084.37601},
     url = {http://geodesic.mathdoc.fr/item/MAN_1959__137_160674/}
}