References
  
  [Bur55]  Burnside,  W., Theory of groups of finite order, Dover Publications
  Inc.,  New  York  (1955),  xxiv+512  pages, (Unabridged republication of the
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  [Wil96]  Wilson,  R.  A., Standard generators for sporadic simple groups, J.
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  [WWT+]  Wilson,  R.  A.,  Walsh, P., Tripp, J., Suleiman, I., Parker, R. A.,
  Norton,  S. P., Nickerson, S., Linton, S., Bray, J. and Abbott, R., ATLAS of
  Finite Group Representations, http://brauer.maths.qmul.ac.uk/Atlas/.