1. M. Aschbacher, Standard component of alternating type centralized by a 4-group, to appear.
2. Involutions in Chevalley groups over fields of even order;Aschbacher;Nagoya Math. J.,1976
3. Groups with a (B, N)-pair of rank 2, I;Fong;Invent. Math.,1973
4. 2-fusion in finite groups;Goldschmidt;Ann. Math.,1974
5. Schur Multipliers of the Known Simple Groups;Griess,1971