@article{GDZPPN002211998,
title = {Ergodicity of harmonic invariant measures for the geodesic flow on hyperbolic spaces.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {450},
year = {1994},
pages = {57-104},
zbl = {0803.58032},
url = {http://dml.mathdoc.fr/item/GDZPPN002211998}
}
Kaimanovich, Vadim A. Ergodicity of harmonic invariant measures for the geodesic flow on hyperbolic spaces.. Journal für die reine und angewandte Mathematik, Tome 450 (1994) pp. 57-104. http://gdmltest.u-ga.fr/item/GDZPPN002211998/