@article{MZ_1973__131_171881,
     author = {Peter J. Cameron},
     title = {Biplanes.},
     journal = {Mathematische Zeitschrift},
     pages = {85--102},
     publisher = {mathdoc},
     volume = {131},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__131_171881/}
}