164 IZA Discussion Papers
IZA Discussion Paper No. 255
IZA Discussion Paper No. 144
published in: Jonas Agell, Michael Keen and Alfons Weichenrieder (eds.), Labor Market Institutions and Public Regulation, 2004, 101-122
IZA Discussion Paper No. 10
published in: Journal of Population Economics, 1999, 12 (3), 363-389
IZA Discussion Paper No. 5
published in: Labour Economics, 1999, 6 (2), 229-251