@inbook{NBERc1671,
 Crossref = "NBERcaga65-2",
 title = "DESCRIPTION OF THE DATA AND SOURCES OF POSSIBLE ERROR",
 author = "Philip Cagan",
 BookTitle = "The Effect of Pension Plans on Aggregate Saving: Evidence from a Sample Survey",
 Publisher = "UMI",
 pages = "8-19",
 year = "1965",
 URL = "http://www.nber.org/chapters/c1671",
}
@book{NBERcaga65-2,
 title = "The Effect of Pension Plans on Aggregate Saving: Evidence from a Sample Survey",
 author = "Philip Cagan",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1965",
 URL = "http://www.nber.org/books/caga65-2",
}