%0 Journal Article %A Artur Avila %A Marcelo Viana %A Amie Wilkinson %T Absolute continuity, Lyapunov exponents and rigidity I: geodesic flows %J Journal of the European Mathematical Society %D 2015 %P 1435-1462 %V 17 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/534/ %R 10.4171/jems/534 %F JEMS_2015_17_6_a3