TY  - JOUR
AU  - Coxeter, H. S. M.
TI  - The Trigonometry of Hyperbolic Tessellations
JO  - Canadian mathematical bulletin
PY  - 1997
SP  - 158
EP  - 168
VL  - 40
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1997-019-0/
DO  - 10.4153/CMB-1997-019-0
ID  - 10_4153_CMB_1997_019_0
ER  -