The Budget Impact of Reduced Early Retirement Incentives on the German Public Pension System

Axel Börsch-Supan, Simone Kohnz, and Reinhold Schnabel, Social Security Programs and Retirement around the World: Fiscal Implications of Reform (University of Chicago Press, 2007), chap. 5, https://www.nber.org/books-and-chapters/social-security-programs-and-retirement-around-world-fiscal-implications-reform/budget-impact-reduced-early-retirement-incentives-german-public-pension-system.