TY  - DATA
AU  - Frenkel, Igor.
AU  - Huang, Yi-Zhi,Lepowsky, J.
TI  - On axiomatic approaches to vertex operator algebras and modules 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470400712 (online)
PY  - 1993///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0494
ER  -