@techreport{NBERw13821,
 title = "Income Maximization and the Selection and Sorting of International Migrants",
 author = "Jeffrey Grogger and Gordon H. Hanson",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13821",
 year = "2008",
 month = "February",
 URL = "http://www.nber.org/papers/w13821",
}