@techreport{NBERw13675,
 title = "The Great Mexican Emigration",
 author = "Gordon H. Hanson and Craig McIntosh",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13675",
 year = "2007",
 month = "December",
 URL = "http://www.nber.org/papers/w13675",
}