@article{JEMS_2015_17_6_a3,
     author = {Artur Avila and Marcelo Viana and Amie Wilkinson},
     title = {Absolute continuity, {Lyapunov} exponents and rigidity {I:} geodesic flows},
     journal = {Journal of the European Mathematical Society},
     pages = {1435--1462},
     publisher = {mathdoc},
     volume = {17},
     number = {6},
     year = {2015},
     doi = {10.4171/jems/534},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/534/}
}