@inbook{NBERc8228,
 Crossref = "NBERfran08-1",
 title = "Introduction to "NBER International Seminar on Macroeconomics 2008"",
 author = "Jeffrey Frankel and Christopher Pissarides",
 BookTitle = "NBER International Seminar on Macroeconomics 2008",
 Publisher = "University of Chicago Press",
 pages = "1-5",
 year = "2009",
 month = "April",
 URL = "http://www.nber.org/chapters/c8228",
}
@book{NBERfran08-1,
 title = "NBER International Seminar on Macroeconomics 2008",
 author = "Jeffrey Frankel and Christopher Pissarides",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2009",
 URL = "http://www.nber.org/books/fran08-1",
}