@article{MOMA_1957__61_177013,
     author = {Fritz Hohenberg},
     title = {Projektionen projektiver {R\"aume.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {54--66},
     publisher = {mathdoc},
     volume = {61},
     year = {1957},
     zbl = {0079.14602},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1957__61_177013/}
}