@inbook{NBERc8247,
 Crossref = "NBERfran08-1",
 title = "Regional Difference-in-Differences in France Using the German Annexation of Alsace-Moselle in 1870-1918",
 author = "Matthieu Chemin and Etienne Wasmer",
 BookTitle = "NBER International Seminar on Macroeconomics 2008",
 Publisher = "University of Chicago Press",
 pages = "285-305",
 year = "2009",
 month = "April",
 URL = "http://www.nber.org/chapters/c8247",
}
@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",
}