MathSciNet bibliographic data MR2587090 (2011j:37052) 37D25 (34D08 37C55 39A12) Avila, Artur Density of positive Lyapunov exponents for quasiperiodic ${\rm SL}(2,\Bbb R)$${\rm SL}(2,\Bbb R)$-cocycles in arbitrary dimension. J. Mod. Dyn. 3 (2009), no. 4, 631–636. Article

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