204 IZA Discussion Papers
IZA Discussion Paper No. 127
IZA Discussion Paper No. 99
published in: Journal of Population Economics, 2002, 15(1), 115-135
IZA Discussion Paper No. 30
published in: Journal of Comparative Economics, 1999, 27 (1), 61-89
IZA Discussion Paper No. 4
published in: Ohashi, Isao/ Tachibanaki, Toshiaki (eds.), International Labour Markets, Incentives and Employment, Macmillan Press LTD, Houndsmills, 1998, 300-332