1. Naturality in conformal field theory
2. R. Dijkgraaf and E. Verlinde, presented Annecy Conf. on Conformal field theory.
3. G. Moore and N. Seiberg, IAS preprint IASSNS-HEP-88/39, Commun. Math. Phys., in press.
4. N. Reshetikhin, LOMI preprints E-4-87, E-17-87;
5. A.N. Kirillov and N. Reshetikhin, LOMI preprint E-9-88.