TY  - BOOK
AU  - Benedetti R
AU  -  Petronio Carlo
TI  - Lectures on hyperbolic geometry
T2  - Universiitext
U1  - B692, N2 
PY  - 1992///
CY  - Berlin
PB  - Springer verlag        
KW  -  Geometry
KW  - Mathematics
ER  -