//-->
The future economic circumstances of the aged: A simulation projection, 1980
Schulz, James H., (1967)
The changing faces of economic insecurity
Turnbull, John Gudert, (1966)
The effects of social security reforms on retirement ages and retirement incomes
Fields, Gary S., (1984)
The economics of aging
Schulz, James H., (1988)
Economics of population aging : the "graying" of Australia, Japan, and the United States
Schulz, James H., (1991)
The world ageing situation 1991