@inbook{NBERc6145,
 Crossref = "NBERdavi85-1",
 title = "Happiness, Affluence, and Altruism in the Postwar Period",
 author = "Frank Levy",
 BookTitle = "Horizontal Equity, Uncertainty, and Economic Well-Being",
 Publisher = "University of Chicago Press",
 pages = "7-34",
 year = "1985",
 URL = "http://www.nber.org/chapters/c6145",
}
@book{NBERdavi85-1,
 title = "Horizontal Equity, Uncertainty, and Economic Well-Being",
 author = "Martin David and Timothy Smeeding",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1985",
 URL = "http://www.nber.org/books/davi85-1",
}