266 IZA Discussion Papers
IZA Discussion Paper No. 387
completely revised version published as IZA DP No. 1879
IZA Discussion Paper No. 314
IZA Discussion Paper No. 313
published in: Health Economics, 2002, 11 (8), 709 - 722
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. 118
published in: Journal of Health Economics, 2001, 20(5), 677-801