@techreport{NBERw9242,
 title = "International Migration, Self-Selection, and the Distribution of Wages: Evidence from Mexico and the United States",
 author = "Daniel Chiquiar and Gordon H. Hanson",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "9242",
 year = "2002",
 month = "September",
 URL = "http://www.nber.org/papers/w9242",
}