21 [61] Abarbanel, H.D.I., Rulkov, N.F. and Sushchik, M.M. (1996), Generalized synchronization of chaos: The auxiliary system approach, Phys. Rev. E , 53 , 4528-4535. [62] Afraimovich, V., Chazottes, J.-R. and Cordonet, A. (2001), Nonsmooth functions in generalized synchronization of chaos, Phys. Lett. A , 283 , 109-112. [63] Hale, J.K. (1980), Ordinary Differential Equations , Krieger Publishing Company: Malabar. [64] Franceschini, V. (1980), A Feigenbaum sequence of bifurcations in the Lorenz model, J. Stat. Phys. , 22 , 397-406. [65] S. Sato, M. Sano, and Y. Sawada, Universal scaling property in bifurcation structure of Duffing’s and of generalized Duffing’s equations , Phys. Rev. A, 28 (1983) 1654–1658. [66] Wiggins, S. (1988), Global Bifurcations and Chaos , Springer: New York. [67] Fink, A.M. (1974), Almost Periodic Differential Equations , Springer-Verlag: Heidelberg. [68] Hale, J. and Koçak, H. (1991), Dynamics and Bifurcations , Springer-Verlag: New York. [69] Schuster, H.G. (1999), Handbook of Chaos Control , Wiley-Vch: Weinheim. [70] Pyragas, K. (1992), Continuous control of chaos by self-controlling feedback, Phys. Lett. A , 170 , 421-428. [71] Pomeau, Y. and Manneville, P. (1980), Intermittent transition to turbulence in dissipative dynam- ical systems, Commun. Math. Phys. , 74 , 189-197.