1. Modular Functions and Dirichlet Series in Number Theory;Apostol,1990
2. Automorphic Forms and Representations;Bump,1997
3. A family of representations of affine Lie algebras;Feign;Usp. Mat. Nauk,1988
4. Wakimoto modules, opers and the center at the critical level;Frenkel;Adv. Math.,2005
5. Vertex operator algebras associated to representations of affine and Virasoro algebras;Frenkel;Duke Math. J.,1992