@inbook{NBERc6052,
 Crossref = "NBERborj00-1",
 title = "The Economic Progress of Immigrants",
 author = "George J. Borjas",
 BookTitle = "Issues in the Economics of Immigration",
 Publisher = "University of Chicago Press",
 pages = "15-50",
 year = "2000",
 month = "January",
 URL = "http://www.nber.org/chapters/c6052",
}
@book{NBERborj00-1,
 title = "Issues in the Economics of Immigration",
 author = "George J. Borjas",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2000",
 URL = "http://www.nber.org/books/borj00-1",
}