[41] Palmer, K.J.: Exponential dichotomies, the shadowing lemma and transversal homoclinic points. In: Kirchgraber U., Walther H.O. (Eds.): Dynamics Reported, Vol. 1, pp. 265–306, J. Willey & Sons, Chichester (1988). [42] Poincaré, H.: Les méthodes nouvelles de la mécanique céleste. Vol. 1, 2, Gauthier-Villars, Paris, 1892. [43] Pyragas, K.: Continuous control of chaos by self-controlling feedback. Phys. Rev. A $_{170}$, 421–428 (1992). [44] Rössler, O.E.: An equation for continuous chaos. Phys. Lett. $_{57A}$, 397–398 (1976). [45] Samoilenko, A.M., Perestyuk, N.A.: Impulsive Differential Equations. World Scientific, Singapore (1995). [46] Schuster, H.G.: Handbook of Chaos Control. Wiley-Vch, Weinheim (1999). [47] Thompson, J.M.T., Stewart, H.B.: Nonlinear Dynamics and Chaos. John Wiley, West Sussex (2002). [48] Ueda, Y.: Randomly transitional phenomena in the system governed by Duffing’s equation. J. Stat. Phys. $_{20}$, 181–196 (1979). 23