TY  - BOOK
AU  - Benedetti,R & Petronio,C
ED  - Petronio, C
TI  - Lectures on hyperbolic geometry
T2  - Universitext
SN  - 3-540-55534-X
U1  - 8.05+8.06 
PY  - 1992///
CY  - Berlin
PB  - Springer
ER  -