1. Arellano, M., & Bover, O. (1995). Another look at the instrumental variables estimation of error component models. Journal of Econometrics, 68, 29–51.
2. Asako, K., Tsuneki, A., Fukuda, S., Teruyama, H., Tsukamoto, T., & Sugiyama, M. (1994). Productivity effect of public capital and welfare evaluation of public investment policy. Economic Analysis, 135, 2–90 (in Japanese).
3. Aso, Y., & Nakamoto, J. (2008). Macroeconomic effects of public capital accumulation. Financial Review, 89, 6–29 (in Japanese).
4. Azariadis, C., & Drazen, A. (1990). Threshold externalities in economic development. Quarterly Journal of Economics, 105, 501–526.
5. Barro, R. J. (1991). Economic growth in a cross section of countries. The Quarterly Journal of Economics, 106, 407–443.