46 IZA Discussion Papers
IZA Discussion Paper No. 639
published in: Labour Economics, 2004, 11 (1), 129-144
IZA Discussion Paper No. 533
published in: Torben Andersen and Per Molander (eds,): Alternatives for Welfare Policy: Coping with Internationalisation and Demographic Change, Cambridge, 2003, 255 - 275
IZA Discussion Paper No. 390
IZA Discussion Paper No. 168
published in: Journal of Public Economics, 2003, 87 (7-8), 1641-1655
IZA Discussion Paper No. 24
published in: Wirtschaftsdienst, 1998, 78 (11), 652-653
IZA Discussion Paper No. 10
published in: Journal of Population Economics, 1999, 12 (3), 363-389