@article{ADM_2007_2_a4,
     author = {V. A. Bovdi and A. V. Konovalov},
     title = {Integral group ring of the {McLaughlin} simple group},
     journal = {Algebra and discrete mathematics},
     pages = {43--53},
     publisher = {mathdoc},
     number = {2},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2007_2_a4/}
}