144 IZA Discussion Papers
IZA Discussion Paper No. 301
published in: E. Currle and T. Wunderlich (eds.), Deutschland – ein Einwanderungsland? Rückblick, Bilanz und neue Fragen - Festschrift für Friedrich Heckmann, Stuttgart 2001
IZA Discussion Paper No. 286
published in: Ralph Rotte / Peter Stein (eds.), Migration Policy and the Economy: International Perspectives, Munich 2001
IZA Discussion Paper No. 100
published in: Journal of Human Resources, 2003, 38 (1), 74-98
IZA Discussion Paper No. 41
published in: Swedish Economic Policy Review, 1998, 5(2), 303-343