Decomposition rules for conformal pairs associated to symmetric spaces   and abelian subalgebras of Z_2-graded Lie algebras
  We give uniform formulas for the branching rules of level 1 modules over orthogonal affine Lie algebras for all conformal pairs associated to symmetric spaces. We also provide a combinatorial intepretation of these formulas in terms of certain abelian subalgebras of simple Lie algebras. 
Paola Cellini, Victor G. Kac, Pierluigi Moseneder Frajria, Paolo Papi