1. Involutions in Chevalley groups over fields of even order;Aschbacher;Nagoya Math. J.,1976
2. Groupes et Algèbres de Lie;Bourbaki,1968
3. Distance-Regular Graphs;Brouwer,1989
4. Cooperstein’s theory;Buekenhout;Simon Stevin,1983
5. Point–line spaces related to buildings;Cohen,1995