A. Avila, J. Santamaria, and M. Viana. Holonomy invariance: rough regularity and applications to Lyapunov exponents. Astérisque, volume 358, pages 13-74, 2013. A. Avila, J. Santamaria, and M. Viana. Cocycles over partially hyperbolic maps. Niedersächsische Staats-und Universitätsbibliothek, 2008.