“Mismeasurement of Pensions Before and After Retirement: The Mystery of the Disappearing Pensions with Implications for the Importance of Social Security as a Source of Retirement Support,” by Alan L. Gustman, Thomas L. Steinmeier and Nahid Tabatabai (WP 2012-268, May 2013, .pdf format, 36p.). Note: Links to the abstract and full-text can be found at:
www.mrrc.isr.umich.edu/publications/index_abstract.cfm?ptid=1&pid=856