@inbook{NBERc11177,
 Crossref = "NBERacem06-1",
 title = "Assessing Structural VARs",
 author = "Lawrence J. Christiano and Martin Eichenbaum and Robert Vigfusson",
 BookTitle = "NBER Macroeconomics Annual 2006, Volume 21",
 Publisher = "MIT Press",
 pages = "1-106",
 year = "2007",
 month = "May",
 URL = "http://www.nber.org/chapters/c11177",
}
@book{NBERacem06-1,
 title = "NBER Macroeconomics Annual 2006, Volume 21",
 author = "Daron Acemoglu and Kenneth Rogoff and Michael Woodford",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "MIT Press",
 year = "2007",
 URL = "http://www.nber.org/books/acem06-1",
}