@inbook{NBERc12222,
 Crossref = "NBERbrow10-1",
 title = "Implicit Taxes on Work from Social Security and Medicare",
 author = "Gopi Shah Goda and John B. Shoven and Sita Nataraj Slavov",
 BookTitle = "Tax Policy and the Economy, Volume 25",
 Publisher = "University of Chicago Press",
 pages = "69-88",
 year = "2010",
 month = "December",
 URL = "http://www.nber.org/chapters/c12222",
}
@book{NBERbrow10-1,
 title = "Tax Policy and the Economy, Volume 25",
 author = "Jeffrey Brown",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2011",
 URL = "http://www.nber.org/books/brow10-1",
}