1. Bureau of Labor Statistics. 2004 Labor Market Projections, BLS: 2004 14
2. Butrica , B. J. H. Goldwyn R. W. Johnson 2005 Understanding Expenditure Patterns in Retirement. 2005 03
3. Consigli , G. 2007 Asset-liability management for individual investors. Asset-liability management for individual investors. 751 827
4. Drucker , P. F. 1950 The mirage of pensions, The mirage of pensions
5. The Economist. 2007 Japan's changing demography. Cloud, or silver linings? July 26.