6Ahsan, S. Kwan A. and Sahni, B., 1989, "Causality between Government Consumption Expenditures and National Income: OECD Countries", Public Finance, 44, pp. 204--224.
7Alesina, A. and Perotti, R., 1996, "Income Distribution, Political Irlstability, and Investment", European Economic Review, 1996, vol. 5, pp. 1170--1189.
8Areilano, M., and Bond, S., 1991, "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations", Review of Economic Studies, 58, pp. 277--297.
9Arellano, M., and Bover, O., 1995, "Another Look at the Instrumental Variables Estimation of Error Component Models", Journal of Econometrics, vol. 68, pp. 29--51.
10Aschauer, D. A., 1989, "Back of the G-7 Pack: Public Investment and Productivity Growth in the Group of Seven", Working Paper Series, Macroeconomic Issues 89--13, Federal Reserve Bank of Chicago.