TY  - JOUR
AU  - Gelu Popescu
TI  - Hyperbolic geometry on noncommutative balls
JO  - Documenta mathematica
PY  - 2009
SP  - 595
EP  - 651
VL  - 14
UR  - http://geodesic.mathdoc.fr/articles/10.4171/dm/283/
DO  - 10.4171/dm/283
ID  - 10_4171_dm_283
ER  -