@inbook{NBERc8812,
 Crossref = "NBERmoon84-1",
 title = "Trends in Social Security Wealth by Cohort",
 author = "Robert A. Moffitt",
 BookTitle = "Economic Transfers in the United States",
 Publisher = "University of Chicago Press",
 pages = "327-358",
 year = "1984",
 URL = "http://www.nber.org/chapters/c8812",
}
@book{NBERmoon84-1,
 title = "Economic Transfers in the United States",
 author = "Marilyn Moon",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1984",
 URL = "http://www.nber.org/books/moon84-1",
}