[1] Lu J, Chen G and Cheng D 2004 IEEE Trans. Circuits
and Systems I 51 787

[2] Lu J and Chen G 2005 IEEE Tans. Automatic Control
50 841

[3] Hong H, Choi M Y and Kim B J 2002 Phys. Rev. E 65 026139

[4] Zhang J B, LIU Z R and Li Y 2007 Chin. Phys. Lett. 24 1494

[5] Pecora L M and Carroll T L 1998 Phys. Rev. Lett. 80 2109

[6] Barahona M and Pecora L M 2004 Phys. Rev. Lett. 89 054101

[7] Makarenko V and LlinSas R 1998 Proc. Natl. Acad. Sci. USA
95 15474

[8] Elson R C et al 1998 Phys. Rev. Lett. 81 5692

[9] Blasius B, Huppert A and Stone L 1999 Nature 399 354

[10] Allaria E, Arechi F T, Digarbo A and Meucci R 2001 Phys. Rev.
Lett. 86 787

[11] Larinotsev E 2000 Int. J. Bifur. Chaos. 10 2441

[12] Parlitz U, Junge L, Lauterborn W and Kocarev L 1996 Phys.
Rev. E 54 2115

[13] Taherion S and Lai Y C 2000 Int. J. Bifur. Chaos 11 2587

[14] Palus M, Kurths J, Schwarz U, Novotna D and Charvatova I 2000
Int. J. Bifur. Chaos 10 2519

[15] Rosa E, Pardo W, Ticos C M, Walkenstein J A and Monti M 2000
Int. J. Bifur. Chaos 10 2551

[16] Heagy J F, Carroll T L and Pecora L M 1995 Phys. Rev. E
74 4185

[17] Pikovsky A S, Rosenblum M G and Kurths J 2001
Synchronization (Cambridge: Nonchainar Science) series 12

[18] Rosenblum M G, Pikovsky A S, Kurths J, Osipov G V, Kiss I Z
and Hudson J L 2002 Phys. Rev. Lett. 89 264102

[19] Osipov G V, Hu B, Zhou C, Ivanchenko M V and Kurths J 2003
Phys. Rev. Lett. 91 024101

[20] Li C and Chen G 2004 Physica A 341 73

[21] Moreno Y and Pacheco A F 2004 Europhys. Lett. 68 603

[22] Romano M C, Thiel M, Kurths J, Kiss I Z and Hudson J L 2005
Europhys. Lett. 71 466

[23] Kocarev L and Amato P 2005 Chaos 15 024101

[24] Han X P, Lu J A 2007 Sci. Chin. F 2 37