TY  - BOOK
AU  - Fenchel,Werner
AU  - Nielsen,Jakob
TI  - Discontinuous groups of isometries in the hyperbolic plane
SN  - 9783110175264
U1  - 514.2 F351D 
PY  - 2002///
CY  - New York
PB  - Walter Degruyter
KW  - Mathematics
KW  - Hyperbolic plane
ER  -