@inbook{NBERc6856,
 Crossref = "NBERbodi87-1",
 title = "Concepts and Measures of Earnings Replacement During Retirement",
 author = "Michael J. Boskin and John B. Shoven",
 BookTitle = "Issues in Pension Economics",
 Publisher = "University of Chicago Press",
 pages = "113-146",
 year = "1987",
 URL = "http://www.nber.org/chapters/c6856",
}
@book{NBERbodi87-1,
 title = "Issues in Pension Economics",
 author = "Zvi Bodie and John B. Shoven and David A. Wise",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1987",
 URL = "http://www.nber.org/books/bodi87-1",
}