TY  - BOOK
AU  - Arakelyan,T.A.
ED  - Yerevan physics institute
TI  - Extended Virasoro algebra and algebra of area preserving diffeomorphisms
T2  - Preprint YERPHI-1244(30)-90
PY  - 1990///
CY  - Ереван
PB  - ЦНИИатоминформ, 
KW  - Physics
ER  -