@inbook{NBERc4213,
 Crossref = "NBERunkn71-3",
 title = "NBER Report Eight",
 author = "",
 BookTitle = "NBER Report Eight",
 Publisher = "NBER",
 year = "1971",
 URL = "http://www.nber.org/chapters/c4213",
}
@book{NBERunkn71-3,
 title = "NBER Report Eight",
 author = "NBER",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1971",
 URL = "http://www.nber.org/books/unkn71-3",
}