446 IZA Discussion Papers
IZA Discussion Paper No. 667
published in: M. Herfurth, M. Kohli and K. F. Zimmermann (eds.), Arbeit in einer alternden Gesellschaft (Labor in an Aging Society), Leverkusen: Leske+Budrich, 2003, 131-177
IZA Discussion Paper No. 584
published in: Review of Economics and Statistics, 2005, 87 (1), 154-173
IZA Discussion Paper No. 561
IZA Discussion Paper No. 256
published in: World Economics, 2001, 2(1), 49-68
IZA Discussion Paper No. 153
published in: Journal of the Royal Statistical Society, Series A (Statistics in Society), 2005, 168 (1), 207-231
IZA Discussion Paper No. 24
published in: Wirtschaftsdienst, 1998, 78 (11), 652-653