1. V. S. Anishchenko, V. V. Astakhov, T. E. Vadivasova, A. B. Neiman, G. I. Strelkova, and L. Shimanskii-Gaier, Nonlinear Dynamics of Chaotic and Stochastic Systems: Tutorial and Modern Developments (Inst. Komp’yut. Issled., Moscow-Izhevsk, 2003; Springer, Berlin, 2003).
2. S. P. Kuznetsov, Dynamical Chaos (Fizmatlit, Moscow, 2006) [in Russian].
3. A. S. Mikhailov and A. Yu. Loskutov, Foundation of Synergetics II: Complex Patterns (Springer, Berlin, 1993; NITS RKhD, Izhevsk, 2008).
4. P. S. Landa and V. G. Ushakov, Pis’ma Zh. Eksp. Teor. Fiz. 86, 356 (2007) [JETP Lett. 86, 304 (2007)].
5. B. Zhou and W. Xu, Chaos, Solitons and Fractals 38, 1146 (2008).