@article{MZ_1974__137_172075,
     author = {Peter J. Cameron},
     title = {On a {Theorem} of {Livingstone} and {Wagner.}},
     journal = {Mathematische Zeitschrift},
     pages = {343--350},
     year = {1974},
     volume = {137},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MZ_1974__137_172075/}
}