TY  - BOOK
AU  - Kelly,Paul Joseph
AU  - Matthews,Gordon
TI  - The non-Euclidean hyperbolic plane: its structure and consistency 
SN  - 3540905529 (New York)
PY  - 1981///
CY  - New York
PB  - Springer-Verlag
KW  - Geometry, Hyperbolic
N1  - Includes index
ER  -