1. S. Smale, “Differentiable dynamical systems,”Bull. Amer. Math. Soc.,73, 747–817 (1967).
2. R. V. Plykin, “On the geometry of hyperbolic attractors of smooth cascades,”Uspekhi Mat. Nauk [Russian Math. Surveys],39, No. 6, 75–113 (1984).
3. A. Fathi, F. Laudenbach, and V. Poenaru “Travaux de Thurston sur les surfaces,” in:Orsay Seminaire, Astérisque, 66–67, (1979).
4. L. Bers, “Quasiconformal mappings and Teichmüller's theorem,” in:Analytic Functions, Princeton (1960), pp. 89–120.