Maximal order Abelian subgroups of Coxeter groups
  In this note we give a classification of the Maximal order Abelian subgroups of finite irreducible Coxeter groups. We also prove a Weyl group analogue of Cartan's theorem that all maximal tori in a connected compact Lie group are conjugate. 
John M. Burns and Goetz Pfeiffer
math.GR