%0 Journal Article %A M. Kanai %T A New Approach to the Rigidity of Discrete Group Actions. %J Geometric and functional analysis %D 1996 %P 943-1056 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/GFA_1996__6_1_58252/ %F GFA_1996__6_1_58252