@inbook{NBERc7338,
 Crossref = "NBERwise94-1",
 title = "Methods for Projecting the Future Size and Health Status of the U. S. Elderly Population",
 author = "Kenneth Manton and Eric Stallard and Burton H. Singer",
 BookTitle = "Studies in the Economics of Aging",
 Publisher = "University of Chicago Press",
 pages = "41-78",
 year = "1994",
 month = "January",
 URL = "http://www.nber.org/chapters/c7338",
}
@book{NBERwise94-1,
 title = "Studies in the Economics of Aging",
 author = "David A. Wise",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1994",
 URL = "http://www.nber.org/books/wise94-1",
}