@techreport{NBERw13074,
 title = "The Stability of Large External Imbalances: The Role of Returns Differentials",
 author = "Stephanie E. Curcuru and Tomas Dvorak and Francis E. Warnock",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13074",
 year = "2007",
 month = "May",
 URL = "http://www.nber.org/papers/w13074",
}