References
  
  [BGH+22] Breuer, T., Gutsche, S., Horn, M., Hulpke, A., Kohl, S., Lübeck, F.
  and  Wensley, C., utils, Utility functions in GAP, Version 0.77 (2022), (GAP
  package), https://gap-packages.github.io/utils.
  
  [BHM09]  Breuer,  T.,  Höhler,  I.  and  Müller, J., MFER, multiplicity-free
  endomorphism  rings of permutation modules of the sporadic simple groups and
  their  cyclic  and bicyclic extensions, Version 1.0.0 (2009), (GAP package),
  https://www.math.rwth-aachen.de/~MFER.
  
  [BL18]  Breuer,  T.  and  Lübeck, F., Browse, ncurses interface and browsing
  applications,       Version      1.8.9      (2018),      (GAP      package),
  https://www.math.rwth-aachen.de/~Browse.
  
  [BN95]  Breuer,  T.  and  Norton,  S.  P.,  Improvements  to  the Atlas, The
  Clarendon   Press  Oxford  University  Press,  London  Mathematical  Society
  Monographs.  New  Series,  11,  New  York (1995), 297–327, (Appendix 2 by T.
  Breuer and S. Norton, Oxford Science Publications).
  
  [Bre14]  Breuer,  T.,  CTBlocks,  Blocks  of Character Tables, Version 0.9.3
  (2014),                            (GAP                            package),
  https://www.math.rwth-aachen.de/~Thomas.Breuer/ctblocks.
  
  [Bre22]  Breuer,  T., The GAP Character Table Library, Version 1.3.3 (2022),
  (GAP package), https://www.math.rwth-aachen.de/~Thomas.Breuer/ctbllib.
  
  [BSWW01]  Bray,  J.  N., Suleiman, I. A. I., Walsh, P. G. and Wilson, R. A.,
  Generating maximal subgroups of sporadic simple groups, Comm. Algebra, 29, 3
  (2001), 1325–1337.
  
  [CCN+85]  Conway,  J.  H.,  Curtis,  R. T., Norton, S. P., Parker, R. A. and
  Wilson,  R.  A.,  Atlas  of  finite groups, Oxford University Press, Eynsham
  (1985),  xxxiv+252  pages,  (Maximal  subgroups  and ordinary characters for
  simple groups, With computational assistance from J. G. Thackray).
  
  [CP96]  Cannon,  J.  J.  and  Playoust,  C.,  An  introduction  to algebraic
  programming  in  Magma,  School of Mathematics and Statistics, University of
  Sydney, Sydney, Australia (1996), http://www.math.usyd.edu.au:8000/u/magma.
  
  [GAP19]  GAP  –  Groups,  Algorithms,  and  Programming, Version 4.10.2, The
  GAP Group (2019), http://www.gap-system.org.
  
  [HL89]  Hiss, G. and Lux, K., Brauer trees of sporadic groups, The Clarendon
  Press,  Oxford  University  Press,  Oxford  Science  Publications,  New York
  (1989), x+526 pages.
  
  [Hup67]  Huppert,  B., Endliche Gruppen. I, Springer-Verlag, Die Grundlehren
  der Mathematischen Wissenschaften, Band 134, Berlin (1967), xii+793 pages.
  
  [Jan05]  Jansen,  C., The minimal degrees of faithful representations of the
  sporadic  simple  groups  and their covering groups, LMS J. Comput. Math., 8
  (2005), 122–144 (electronic).
  
  [JLPW95]  Jansen, C., Lux, K., Parker, R. and Wilson, R., An atlas of Brauer
  characters, The Clarendon Press Oxford University Press, London Mathematical
  Society  Monographs.  New  Series,  11,  New  York  (1995), xviii+327 pages,
  (Appendix 2 by T. Breuer and S. Norton, Oxford Science Publications).
  
  [JSO14]  (Bray,  T.,  Ed.),  The  JavaScript  Object  Notation  (JSON)  Data
  Interchange Format (2014), http://www.rfc-editor.org/info/rfc7159.
  
  [LN18]  Lübeck,  F.  and  Neunhöffer,  M.,  GAPDoc,  A  Meta Package for GAP
  Documentation,      Version      1.6.2      (2018),      (GAP      package),
  https://www.math.rwth-aachen.de/~Frank.Luebeck/GAPDoc.
  
  [Lüb21] Lübeck, F., StandardFF, A GAP package for constructing finite fields
  (2021), (GAP package), https://github.com/frankluebeck/StandardFF/.
  
  [Neu14]  Neunhöffer,  M.,  IO,  Bindings for low level C library IO, Version
  4.3.1                 (2014),                 (GAP                 package),
  http://www-groups.mcs.st-and.ac.uk/~neunhoef/Computer/Software/Gap/io.html.
  
  [Nic06]  Nickerson,  S. J., An Atlas of Characteristic Zero Representations,
  Phd thesis, School of Mathematics, University of Birmingham (2006).
  
  [NMP18] Naughton, L., Merkwitz, T. and Pfeiffer, G., TomLib, The GAP Library
  of    Tables    of    Marks,    Version   1.2.7   (2018),   (GAP   package),
  http://schmidt.nuigalway.ie/tomlib.
  
  [NSA+18]  Neunhöffer,  M.,  Seress,  Á.,  Ankaralioglu,  N., Brooksbank, P.,
  Celler, F., Howe, S., Law, M., Linton, S., Malle, G., Niemeyer, A., O'Brien,
  E.,  Roney-Dougal,  C.  M.  and  Horn,  M.,  recog,  A  collection  of group
  recognition     methods,    Version    1.3.1    (2018),    (GAP    package),
  https://gap-packages.github.io/recog.
  
  [NW05]  Nickerson,  S.  J.  and  Wilson,  R.  A., Semi-presentations for the
  sporadic simple groups, Experiment. Math., 14, 3 (2005), 359–371.
  
  [Rin]      Ringe,      M.,      The      C     MeatAxe,     Version     2.4,
  https://www.math.rwth-aachen.de/~MTX.
  
  [SWW00]  Suleiman,  I.  A.  I.,  Walsh,  P.  G. and Wilson, R. A., Conjugacy
  classes in sporadic simple groups, Comm. Algebra, 28, 7 (2000), 3209–3222.
  
  [Wil96]  Wilson,  R.  A., Standard generators for sporadic simple groups, J.
  Algebra, 184, 2 (1996), 505–515.
  
  [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://atlas.math.rwth-aachen.de/Atlas/v3.