@inbook{NBERc0523,
 Crossref = "NBERgert07-1",
 title = "Monetary Policy in Europe versus the United States: What Explains the Difference?",
 author = "Harald Uhlig",
 BookTitle = "International Dimensions of Monetary Policy ",
 Publisher = "University of Chicago Press",
 pages = "489-533",
 year = "2007",
 month = "June",
 URL = "http://www.nber.org/chapters/c0523",
}
@book{NBERgert07-1,
 title = "International Dimensions of Monetary Policy ",
 author = "Jordi Galí­ and Mark J. Gertler",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2009",
 URL = "http://www.nber.org/books/gert07-1",
}