Office of Tax Policy Research. (2006). World Tax Database, University of Michigan Ross
School of Business.
Randolph, William C. (2006). “International Burdens of the Corporate Income Tax.” CBO
Working Paper 2006 - 09.
Sachs, Jeffrey D., and Andrew M. Warner. “Trade Openness Indicators.” Center for International
Development, Harvard University.
Slemrod, Joel and Shlomo Yitzhaki. (2002). “Tax Avoidance, Evasion, and Administration.” In
Alan J. Auerbach and Martin Feldstein (eds.), Handbook of Public Economics, Vol. 3(2), 1423-
1470. Amsterdam: Elsevier Science North-Holland.
World Bank. (2006). World Development Indicators 2006. Washington D.C.
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