463 IZA Discussion Papers
IZA Discussion Paper No. 50
published in: Jahrbuch für Wirtschaftsgeschichte / Economic History Yearbook, 2000, 1, 225-237
IZA Discussion Paper No. 40
published in: Klaus F. Zimmermann (ed.): European Migration - What Do We Know?, Oxford University Press, Oxford, 2005
IZA Discussion Paper No. 29