@inbook{NBERc6034,
 Crossref = "NBERbodi83-1",
 title = "Observations on the Indexation of Old Age Pensions",
 author = "Lawrence H. Summers",
 BookTitle = "Financial Aspects of the United States Pension System",
 Publisher = "University of Chicago Press",
 pages = "231-258",
 year = "1983",
 URL = "http://www.nber.org/chapters/c6034",
}
@book{NBERbodi83-1,
 title = "Financial Aspects of the United States Pension System",
 author = "Zvi Bodie and John B. Shoven",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1983",
 URL = "http://www.nber.org/books/bodi83-1",
}