TY  - GEN
AU  - Kelly, Paul
AU  - Matthews, Gordon
TI  - The Non- Euclidean, hyperbolic plane
SN  - 3540905529
U1  - 516.9 
PY  - 1981///
CY  - New York
PB  - Springer-Verlag
N1  - Contine bibliografie
ER  -