1. Social security: International comparisons;Aaron,1967
2. The ‘life cycle’ hypothesis of saving: Aggregate implications and tests;Ando;American Economic Review,1963
3. National income and the price level;Bailey,1971
4. Are governed bonds net wealth?;Barro;Journal of Political Economy,1974
5. The impact of social security on private saving: evidence from the U.S. time series;Barro,1978