@inbook{NBERc12848,
 Crossref = "NBERbrow12-1",
 title = "Introduction to "Tax Policy and the Economy, volume 27"",
 author = "Jeffrey R. Brown",
 BookTitle = "Tax Policy and the Economy, Volume 27",
 Publisher = "University of Chicago Press",
 year = "2012",
 month = "December",
 URL = "http://www.nber.org/chapters/c12848",
}
@book{NBERbrow12-1,
 title = "Tax Policy and the Economy, Volume 27",
 author = "Jeffrey R. Brown",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2013",
 URL = "http://www.nber.org/books/brow12-1",
}