1. Conformal blocks, fusion rules and the Verlinde formula;Beauville,1996
2. Conformal blocks and generalized theta functions;Beauville;Comm. Math. Phys.,1994
3. Symmetry breaking boundary conditions and WZW orbifolds;Birke;Adv. Theor. Math. Phys.,1999
4. A proof for the Verlinde formula;Faltings;J. Algebraic Geom.,1994
5. The action of outer automorphisms on bundles of chiral blocks;Fuchs;Comm. Math. Phys.,1999