3BadiH.Baltagi.Econometric Analysis of Panel Data[M].NewYork,Johu Wiley&Sons,1995.
4Hadri,K.Testing the Null Hypothesis of Stationarity Against the Alterna-tive of a Unit Root in Panel Data With Serially Correlated Errors[Z].Manuscript,Department of Economics and Accounting,University of Liverpool,Unite Kingdom,1999.
5Im K.S.,M.H.Pesaran and Y.Shin.Testing for Unit Roots in Heterogeneous Panels[J].Journal of Econometrics 2003,115:53-74.
6Levin.A.,C.F.Lin.Unit Root Tests in Panel Data:Asymptotic and Finite Sample Properties[C].UC San Diego.Working Paper,1992.92-23.
7Luciano,G.On the Power of Panel Cointegration Tests:A Monte Carlo Comparison[J].Economics Letters,2003,80:105-111.
8Kao,C..Spurious Regression and Residual-based Tests for Cointegration in Panel Data[J].Journal of Econometrics,1999,90:1-44.
9Kao,C.,Chiang,M.-H..On the Estimation and Inference of a Cointegrated Regression in Panel data[J].Advances of Econometrics,2000,15:7-51.
10Maddala G.S.,Wu Shaowen,1999.A Comparative Study of Unit Root Tests with Panel Data and a New Simple Test[J].Oxford Bulletin of Economics and Statistics,1999,61:631-652.