1. A. Björner, F. Brenti, Combinatorics of Coxeter groups, Graduate Texts in Mathematics, Springer, Berlin, to appear.
2. Bruhat order of Coxeter groups and shellability;Björner;Adv. Math.,1982
3. Introduction to Compact Transformation Groups;Bredon,1972
4. Conjugacy classes in the Weyl group;Carter;Compos. Math.,1972
5. Symmetrical subgroups of Artin groups;Crisp;Adv. Math.,2000