@inbook{NBERc11655,
 Crossref = "NBERales08-1",
 title = "Comment on "The Breakup of the Euro Area"",
 author = "Martin Feldstein",
 BookTitle = "Europe and the Euro",
 Publisher = "University of Chicago Press",
 pages = "51-55",
 year = "2010",
 month = "February",
 URL = "http://www.nber.org/chapters/c11655",
}
@book{NBERales08-1,
 title = "Europe and the Euro",
 author = "Alberto Alesina and Francesco Giavazzi",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2010",
 URL = "http://www.nber.org/books/ales08-1",
}