%0 Journal Article %A Marina Ratner %T Strict measure rigidity for unipotent subgroups of solvable groups. %J Inventiones mathematicae %D 1990 %P 449-482 %V 101 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1990__101_2_143812/ %F IM_1990__101_2_143812