@article{JRAM_1994__455_153654,
     author = {Vadim A. Kaimanovich},
     title = {Ergodicity of harmonic invariant measures for the geodesic flow on hyperbolic spaces.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {57--104},
     year = {1994},
     volume = {455},
     zbl = {0803.58032},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__455_153654/}
}