3Arellano, M., Bond, S., 1991, Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations. Review of Economic Studies 58, 277-297.
4Bai, C.E., Li, D.D., Tao, Z.G., Wang, Y.J., 2000, A Multitask Theory of State Enterprise Reform. Journal of Comparative Economics 28, 716-738.
5Bai, C.E., Du, Y.J., Tao, Z.G. and Tong, Y.T. , 2002, Protectionism and Regional Specialization: Evidence from China's Industries.The University of Hong Kong Mimeo.
6Dumais, G., Ellison, G. and Glaeser, E., 2002, Geographic Concentration as a Dynamic Process. Review of Economics and Statistics 84,193-204.
7Ellison, G. and Glaeser, E., 1997, Geographic Concentration in US Manufacturing Industries: a Dartboard Approach. Journal of Political Economy 105, 889-927.