%0 Journal Article %A M. Brin %A M. Gromov %T On the Ergodicity of Frame Flows. %J Inventiones mathematicae %D 1980 %P 1-8 %V 60 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1980__60_142741/ %F IM_1980__60_142741