@article{MAN_1925__93_159095,
     author = {H. Mohrmann},
     title = {\"Uber zentrische {Kollineation} von {Kegelschnitten}},
     journal = {Mathematische Annalen},
     pages = {315--315},
     publisher = {mathdoc},
     volume = {93},
     year = {1925},
     zbl = {51.0504.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1925__93_159095/}
}