? Distinctions by Entry Visa', Journal of Labor Economics, 29 (3), July, 417-57 -- Robert E.B. Lucas (1987), 'Emigration to South … impact of skilled emigration on poor-country innovation. National Bureau of Economic Research Cambridge, Mass. -- Bakewell, O …-1374. -- Clemens, M.A. 2011. Economics and emigration: trillion-dollar bills on the sidewalk? Journal of Economic Perspectives, 25, 83 …