@inbook{NBERc10963,
 Crossref = "NBERblan89-1",
 title = "Recent Trends in U.S. Earnings and Family Incomes",
 author = "Frank Levy",
 BookTitle = "NBER Macroeconomics Annual 1989, Volume 4",
 Publisher = "MIT Press",
 pages = "73-120",
 year = "1989",
 URL = "http://www.nber.org/chapters/c10963",
}
@book{NBERblan89-1,
 title = "NBER Macroeconomics Annual 1989, Volume 4",
 author = "Olivier J. Blanchard and Stanley Fischer",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "MIT Press",
 year = "1989",
 URL = "http://www.nber.org/books/blan89-1",
}