TY  - JOUR
AU  - Mark Pollicott
AU  - Richard Sharp
TI  - Orbit counting for some discrete groups acting on simply connected manifolds with negative curvature.
JO  - Inventiones mathematicae
PY  - 1994
SP  - 275
EP  - 302
VL  - 117
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1994__117_1_144216/
ID  - IM_1994__117_1_144216
ER  -