Leider ist der Eintrag nur auf Englisch verfügbar.
Two solutions to the challenges of population aging
Macroeconomics & Fiscal Management Discussion Paper Series, No. 1, March 2015, World Bank, Washington D.C. Fiscal Policy Issues in the Aging Societies Work Opportunities for Older Americans Series 2, Feb 2006 Does Working Longer Make People Healthier and Happier?
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