@article{10_4153_CMB_1959_003_0,
     author = {Moser, W.O.J.},
     title = {Abstract {Definitions} for the {Mathieu} {Groups} {M11and} {M12}},
     journal = {Canadian mathematical bulletin},
     pages = {9--13},
     year = {1959},
     volume = {2},
     number = {1},
     doi = {10.4153/CMB-1959-003-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1959-003-0/}
}