3Mansfield, E., 1968, Industrial Research and Technological Innovation- An Empirical Study, Economic Journal 91: 907-918.
4Oates, W. E., 1972, Fiscal Federalism, Harcourt Brace Jovanovich. Inc.
5Stigler, G. , 1957, Tenable Range of Function of Local Government, In Federal Expenditure Policy for Economic Growth and Stability, Washington, D. C.: Joint Economic Committee, Subcommittee on Fiscal Policy, P213~ 219.
6Tullock,G., 1980,Efficient Rent Seeking, In Buchanan and Tullock(eds) ,Toward a Theory of the Rent- seeking Society, Texas: Texas A and M University Press.