%0 Journal Article %A David Fisher %A Gregory Margulis %T Local rigidity of affine actions of higher rank groups and lattices %J Annals of mathematics %D 2009 %P 67-122 %V 170 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2009.170.67/ %R 10.4007/annals.2009.170.67 %G en %F 10_4007_annals_2009_170_67