VIRASORO ALGEBRA: General: Kac-Moody and Virasoro algebras by Antony Wassermann [2010/04] 80 pp [q-hypergeometric] Orthogonal Polynomials in Mathematical Physics by Chuan-Tsung Chan et al. [2017/12] Re: IRRATIONAL CONFORMAL FIELD THEORY: Halpern et al. 95/01; THE NET ADVANCE OF PHYSICS
VIRASORO ALGEBRA: