Clemens, Michael A. Economics and Emigration: Trillion-Dollar Bills on the Sidewalk?. Journal of Economic Perspectives. 1 August 2011, 25 (3): 83–106. ISSN 0895-3309. doi:10.1257/jep.25.3.83.
Hamilton, B.; Whalley, J. Efficiency and distributional implications of global restrictions on labour mobility: calculations and policy implications. Journal of Development Economics. 1 February 1984, 14 (1–2): 61–75. ISSN 0304-3878. PMID 12266702. doi:10.1016/0304-3878(84)90043-9.
Hamilton, B.; Whalley, J. Efficiency and distributional implications of global restrictions on labour mobility: calculations and policy implications. Journal of Development Economics. 1 February 1984, 14 (1–2): 61–75. ISSN 0304-3878. PMID 12266702. doi:10.1016/0304-3878(84)90043-9.
Clemens, Michael A. Economics and Emigration: Trillion-Dollar Bills on the Sidewalk?. Journal of Economic Perspectives. 1 August 2011, 25 (3): 83–106. ISSN 0895-3309. doi:10.1257/jep.25.3.83.
Hamilton, B.; Whalley, J. Efficiency and distributional implications of global restrictions on labour mobility: calculations and policy implications. Journal of Development Economics. 1 February 1984, 14 (1–2): 61–75. ISSN 0304-3878. PMID 12266702. doi:10.1016/0304-3878(84)90043-9.