155 IZA Discussion Papers
IZA Discussion Paper No. 398
published in: Health Economics, 2002, 11 (6), 505-520
IZA Discussion Paper No. 314
IZA Discussion Paper No. 312
published in: De Economist, 2003, 151 (2), 171-192
IZA Discussion Paper No. 189
published in: Economic Journal, 2001, 111 (475), F585-606
IZA Discussion Paper No. 144
published in: Jonas Agell, Michael Keen and Alfons Weichenrieder (eds.), Labor Market Institutions and Public Regulation, 2004, 101-122