TY  - BOOK
AU  - Ryskov S S
ED  - Steklov Institute of Mathematics( 1980 : Moscow )
ED  - Steklov Institute of Mathematics
TI  - Geometry of positive quadratic forms : proceedings
U1  - 510.6047 
PY  - 1982///
CY  - Providence
PB  - A M S
KW  - Mathematics
ER  -