4CHEN C H. Regional Determinants of Foreign Direct Investment in China's Mainland[J ]. Journal of Economic Studies, 1996, 23 (2): 18-30.
5ARELLANO M, BOND S R. Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equation[J]. Review of Economic Studies, 1991, 58(2): 277-297.
6ARELLANO M, BOVER O. Another Look at the Instrumental Variable Estimation of Error Components Models[J]. Journal of Econometrics, 1995, 68( 1 ): 29-51.
7IM K S, PESARAN M H, Y SHIN. Testing for Unit Roots in Heterogeneous Panels[J]. Journal of Econometrics, 2003 (115): 53-74.