%0 Journal Article %A William M. Goldman %A François Labourie %A Gregory Margulis %T Proper affine actions and geodesic flows of hyperbolic surfaces %J Annals of mathematics %D 2009 %P 1051-1083 %V 170 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2009.170.1051/ %R 10.4007/annals.2009.170.1051 %G en %F 10_4007_annals_2009_170_1051