@techreport{ w6163,
 title = "Economic Integration and Political Disintegration",
 author = "Alberto Alesina and Enrico Spolaore and Romain Wacziarg",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "6163",
 year = "1997",
 month = "September",
 URL = "http://www.nber.org/papers/w6163",
}