[1] Pecora L M and Carroll T L 1990 Phys. Rev. Lett.
64 821

[2] Chen Y, An H and Li Z 2008 Appl. Math. Comput.
197 96

[3] Park J H 2007 Chaos Solitons Fractals 34 1154

[4] Lu J, Wu X and L\"{u J 2002 Phys. Lett. A 305
365

[5] Wang C C and Su J P 2004 Chaos Solitons Fractals
20 967

[6] Park J H 2006 Chaos Solitons Fractals 27 357

[7] Park J H 2006 Chaos Solitons Fractals 27 549

[8] Rosenblum M G and Pikovsky A S, Kurths J 1996 Phys.
Rev. Lett. 76 1804

[9] Rulkov N F, Sushchik M M and Tsimring L S 1995 Phys.
Rev. E 51 980

[10] Yan Z and Yu P 2007 Chaos Solitons Fractals
33 419

[11] Wu L and Zhu S 2003 Phys. Lett. A 315 101

[12] Zhang Q and Lu J A 2008 Phys. Lett. A 372
1416

[13] Boccaletti S and Valladares D L 2000 Phys. Rev. E
62 7497

[14] Hramov A E and Koronovsii A A 2004 Chaos 14
603

[15] Hramov A E and Koronovsii A A 2005 Europhys. Lett.
72 901

[16] Jia Q 2007 Phys. Lett. A 370 40

[17] Zheng S, Bi Q and Cai G 2009 Phys. Lett. A
373 1553

[18] Park J H 2005 Chaos Solitons Fractals 25 333

[19] Tang X H, Lu J A and Zhang W W 2007 Chin. Dynam.
Control. 0705 216

[20] Runzi L 2008 Phys. Lett. A 372 3667

[21] R\"{ossler O E 1979 Phys. Lett. A 71 155

[22] Chen S H, Hua J, Wang C P and Lu J H 2004 Phys.
Lett. A 321 50

[23] Feng J W, Chen S H and Wang C P 2005 Chaos Solitons
Fractals 26 1163

[24] Li Y, Tang W K S and Chen G 2005 Int. J. Bifur.
Chaos 15 3367

[25] Hua C, Guan X and Shi P 2005 Chaos Solitons
Fractals 23 757

[26] Slotine J E and Li W 1991 Applied Nonlinear
Control (New Jersey: Prentice-Hall)