D. V. Anosov, “On a class of invariant sets of smooth dynamical systems,” in: Proceedings of the Vth International Conference on Linear Oscillations (August 25–September 4, 1969) [in Russian], Vol. 2, Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (1970), pp. 39–45.
D. V. Anosov, S. H. Aranson, V. Z. Grines, et al., “Dynamical systems with hyperbolic behavior,” in: VINITI Series in Contemporary Problems in Mathematics. Fundamental Trends [in Russian], Vol. 66. VINITI, Moscow (1991), pp. 5–247.
A. Katok and B. Hasserblatt, Introduction to the Modern Theory of Dynamical Systems, Encyclopaedia of Mathematics and Its Applications, Vol. 54, Cambridge University Press, Cambridge (1995).
A. N. Sharkovskii, “Global stability of trajectories and dynamical systems,” in: Proceedings of the XIth Summer Mathematical School [in Russian], Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (1992), pp. 349–360.
V. A. Dobrynskii and A. N. Sharkovskii, “Typicalness of dynamical systems almost all trajectories of which are stable under constantly acting perturbations,” Dokl. Akad. Nauk SSSR, 211, No. 2, 273–276 (1973).
V. A. Dobrynskii, “Typicalness of dynamical systems with stable prolongation,” in: Dynamical Systems and Problems of Stability of Solutions of Differential Equations [in Russian], Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (1973), pp. 43–53.
D. V. Anosov, S. H. Aranson, I. U. Bronshtein, V. Z. Grines, et al., “Smooth dynamical systems,” in: VINITI Series in Contemporary Problems in Mathematics. Fundamental Trends [in Russian], Vol. 1, VINITI, Moscow (1985), pp. 151–241.
V. V. Nemytskii, and V. V. Stepanov, Qualitative Theory of Differential Equations [in Russian], Nauka, Moscow (1949).
C. Conley, “Isolated invariant sets and the Morse index,” in: Conf. Board. Math. Sci., Reg. Conf. Ser. Math., Vol., 38, American Mathematical Society, Providence RI (1978).
I. U. Bronshtein and V. P. Burdaev, “Chain recursion property and extensions of dynamical systems,” in: Mathematical Studies, Issue 55: Algebraic Invariants of Dynamical Systems [in Russian], Shtiintsa, Kishinev (1980), pp. 3–11.
M. B. Vereikina and A. N. Sharkovskii, “The set of almost returning points of a dynamical system,” Dokl. Akad. Nauk Ukr. SSR, Ser. A, No. 1, 6–9 (1984).