3ENGLE R F. Autoregressive conditional heteroscedasticity with estimates of the variance of United Kingdom inflation[J]. Econometrica, 1982,50 (4):987-1007.
4WU G L,LONG F J. The Time-Series Study of Housing Price Index of Shanghai [EB]. [ 2004-04-29]. www. asres. org/
9GLOSTEN L R, JAGANATHAN R, RUNKLE D. On the relation between the expected value and the volatility of the normal excess return on stocks[J]. Journal of Finance, 1993,48(5) : 1779-1801.
10ZAKOIAM J M. Threshold heteroscedastic Models[J]. Journal of Economic Dynamics and Control, 1994, 18 (5) :931-944.