TY - JOUR AU - William M. Goldman AU - François Labourie AU - Gregory Margulis TI - Proper affine actions and geodesic flows of hyperbolic surfaces JO - Annals of mathematics PY - 2009 SP - 1051 EP - 1083 VL - 170 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4007/annals.2009.170.1051/ DO - 10.4007/annals.2009.170.1051 LA - en ID - 10_4007_annals_2009_170_1051 ER -