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@article{MZ_1972__125_171702, author = {Wilbur J\'onsson}, title = {On the {Mathieu} {Groups} {M22,} {M23,} {M24} and the {Uniqueness} of the {Associated} {Steiner} {Systems.}}, journal = {Mathematische Zeitschrift}, pages = {193--214}, publisher = {mathdoc}, volume = {125}, year = {1972}, url = {http://geodesic.mathdoc.fr/item/MZ_1972__125_171702/} }
Wilbur Jónsson. On the Mathieu Groups M22, M23, M24 and the Uniqueness of the Associated Steiner Systems.. Mathematische Zeitschrift, Tome 125 (1972), pp. 193-214. http://geodesic.mathdoc.fr/item/MZ_1972__125_171702/