TY  - DATA
AU  - P. Kelly; G. Matthews
TI  - The Non-Euclidean, Hyperbolic Plane
SN  - 9781461381259
PY  - 1981///
PB  - Springer New York
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/978-1-4613-8125-9
ER  -