@article{MZ_1971__119_171497,
     author = {Francis Buekenhout},
     title = {On the {Orbits} of {Collineation} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {273--275},
     publisher = {mathdoc},
     volume = {119},
     year = {1971},
     zbl = {0206.23601},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__119_171497/}
}