@techreport{NBERw12708, title = "The "Great Moderation" and the US External Imbalance", author = "Alessandra Fogli and Fabrizio Perri", institution = "National Bureau of Economic Research", type = "Working Paper", series = "Working Paper Series", number = "12708", year = "2006", month = "November", URL = "http://www.nber.org/papers/w12708", }