@article{MZ_1961__76_169968,
     author = {A. Wagner},
     title = {On collineation groups of projective spaces. {I.}},
     journal = {Mathematische Zeitschrift},
     pages = {411--426},
     publisher = {mathdoc},
     volume = {76},
     year = {1961},
     zbl = {0099.36603},
     url = {http://geodesic.mathdoc.fr/item/MZ_1961__76_169968/}
}