1 Ott E, Grebogi C, York J A . Phys Rev Lett, 1990; 64: 1196
2 Ditto W L, Rauseo S N, Spano M L . Phys Rev Lett, 1990; 65: 3211
3 Pecora L, Carroll T . Phys Rev Lett, 1990; 64: 821
4 Carroll T, Pecora L . IEEE Tans Circuits and Syst, 1991; 38: 453
5 Hunt E R . Phys Rev Lett, 1991; 67: 53
6 Pyragas K . Phys Lett, 1992; A170: 421
7 Qu Z L, Hu G . Phys Lett, 1993; A178: 265
8 Qu Z L, Hu G . Phys Rev Lett, 1994; 74: 1736
9 Kocarev L, Parlitz U . Phys Rev Lett, 1995; 74: 5028
10 Pen J H, Ding E J, Ding M, Yang W . Phys Rev Lett, 1996; 76: 904
11 Ditto W L, Spano M L, Lindner J F , Physica, 1995; D86: 198
12 Hu G, Qu Z L, He K . Int J Bifur and Chaos, 1995; 5: 901
13 Fang Jin-Qing . Progr in Phys(in Chinese), 1996; 16: 1
14 Fang Jin-Qing . Progr in Phys(in Chinese), 1996; 16: 137
15 Sepulchre J A, Babloyantz A . Phys Rev, 1994; E48: 945
16 Lai Y C, Grebogi C . Phys Rev, 1994; E50: 1894
17 Auerbach D . Phys Rev Lett, 1994; 72: 1184
18 Hu G, Qu Z L . Phys Rev Lett, 1994; 72: 68
19 Qin F, Wolf E E, Chang H C . Phys Rev Lett, 1994; 72: 1459
20 Shermer R, Hubler A, Packard N . Phys Rev, 1991; A43: 5642
21 Kocarev L, Parlitz U . Phys Rev Lett, 1996; 77: 2206
22 Kaneko K . Physica, 1992; D55: 368
23 Shinbrot T . Adv in Phys, 1995; 44: 73
24 Ali M K, Fang Jin-Qing . Phys Rev, 1997; E55(5): 5285