%0 Journal Article %A Vadim A. Kaimanovich %T The Poisson formula for groups with hyperbolic properties %J Annals of mathematics %D 2000 %V 152 %N 3 %U http://geodesic.mathdoc.fr/articles/10.2307/2661351/ %R 10.2307/2661351 %F 10_2307_2661351