%0 Journal Article %A L. Flaminio %A R.J. Spatzier %T Geometrically finite groups, Patterson-Sullivan measures and Ratner's rigidity theorem. %J Inventiones mathematicae %D 1990 %P 601 %V 99 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/IM_1990__99_1_143772/ %G un %F IM_1990__99_1_143772