964 IZA Discussion Papers
IZA Discussion Paper No. 61
published in: K.F. Zimmermann (ed.), European Migration - What Do We Know? Oxford University Press, 2005
IZA Discussion Paper No. 59
published in: : K.F. Zimmermann (ed.), European Migration - What Do We Know? Oxford University Press, 2005
IZA Discussion Paper No. 57
published in: Journal of Human Resources, 2000, 35 (3), 550-569
IZA Discussion Paper No. 54
published in: Journal of Population Economics, 2002, 15 (1), 83-114