TY  - JOUR
AU  - V. V. Nikulin
TI  - Reflection groups in Lobachevskii spaces and the denominator identity for Lorentzian Kac--Moody algebras
JO  - Izvestiya. Mathematics 
PY  - 1996
SP  - 305
EP  - 334
VL  - 60
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1996_60_2_a3/
LA  - en
ID  - IM2_1996_60_2_a3
ER  -