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@article{MZ_1964__84_170275, author = {W.J. Wong}, title = {A characterization of the {Mathieu} group {M12.}}, journal = {Mathematische Zeitschrift}, pages = {378--388}, publisher = {mathdoc}, volume = {84}, year = {1964}, zbl = {0129.01801}, url = {http://geodesic.mathdoc.fr/item/MZ_1964__84_170275/} }
W.J. Wong. A characterization of the Mathieu group M12.. Mathematische Zeitschrift, Tome 84 (1964), pp. 378-388. http://geodesic.mathdoc.fr/item/MZ_1964__84_170275/