@book{ BB26290428, author = "Hanson, Gordon H. (Gordon Howard) and Kerr, William R. and Turner, Sarah E.", title = "High-skilled migration to the United States and its economic consequences", publisher = "University of Chicago Press", year = "2018", series = "A National Bureau of Economic Research conference report", number = "", URL = "https://ci.nii.ac.jp/ncid/BB26290428" }