@article{MZ_1979__169_172876,
     author = {J. Chris Fisher and Joseph A. Thas},
     title = {Flocks in {PG(3,} q).},
     journal = {Mathematische Zeitschrift},
     pages = {1--12},
     publisher = {mathdoc},
     volume = {169},
     year = {1979},
     zbl = {0396.51009},
     url = {http://geodesic.mathdoc.fr/item/MZ_1979__169_172876/}
}