5Boskin Michael J., et al. Social Security: A Financial Appraisal Across and Within Generations[J]. National Tax Journal, 1987(40:3), 19- 34.
6Coronado, Julia, Don FuUerton, and Thomas Glass. The Progressivity of Social Security[J]. 2000, NBER Working Paper 7520. February.
7Gustman. Alan and Thomas Steinmeier. How Effective is Redistribution Under the Social Security Benefit Formula? [ J ]. 2000 NBER Working Paper 7597, March.
8Lee Cohen, C. Eugene Steuerle, Social Security Redistribution by Education, Race, and Income: How Much and Why [ C ]. The Third Annual Conference of the Retirement Research Consortium Making Hard Choices About Retirement, May 17 - 18, 2001 Washington, DC.
9Jeffrey B. Liebman, Redistribution in the Current U.S. Social Security System[ J ]. NBER Working Paper No. 8625, December 2001.
10Borelia. M., The distributional impact of pension system reforms: an application to the Italian case[J]. Fiscal studies, 2004 25, 415 -437.