1. Arnold, V. I., On the Nonstability of Dynamical Systems with Many Degrees of Freedom, Soviet Math. Dokl., 1964, vol. 5, no. 3, pp. 581–585; see also: Dokl. Akad. Nauk SSSR, 1964, vol. 156, no. 1, pp. 9-12.
2. Grad. Texts in Math.;V. I. Arnol’d,1997
3. Chaos and Diffusion in Hamiltonian Systems: Proc. of the 4th Workshop in Astronomy and Astrophysics (Chamonix, France, Feb 1994), D. Benest, C. Froeschle (Eds.), Paris: Atlantica Séguier Frontières, 1995.
4. Bounemoura, A., Fayad, B., and Niederman, L., Super-Exponential Stability for Generic Real-Analytic Elliptic Equilibrium Points, Adv. Math., 2020, vol. 366, 107088, 30 pp.
5. Brin, M. and Stuck, G., Introduction to Dynamical Systems, Cambridge: Cambridge Univ. Press, 2015.