1. M. W. Hirsch and C. Pugh, “Stable manifolds and hyperbolic sets,” in: Global Analysis (Proc. Symp. Pure Math., Vol. 14, S.-S. Chern and S. Smale, eds.), Amer. Math. Soc., Providence, R. I. (1970), pp. 133–164.
2. J. Palis, Proc. Am. Math. Soc., 27, 85–90 (1971).
3. M. Shub and S. Smail, Ann. Math., 96, 587–591 (1972).
4. I. U. Bronshtein, Nonautonomous Dynamical Systems [in Russian], Shtiintsa, Kishinev (1984).
5. D. V. Anosov, S. Kh. Aranson, V. Z. Grines, R. V. Plykin, E. A. Sataev, A. V. Safonov, V. V. Solodov, A. N. Starkov, A. M. Stepin, and S. V. Shlyachkov, “Dynamical systems with hyperbolic behavior [in Russian],” in: Dynamical Systems–9 (Itogi Nauki i Tekhniki. Ser. Sovrem. Probl. Mat. Fund. Napr., Vol. 66), VINITI, Moscow (1991), pp. 5–242.