6 IZA Discussion Papers
IZA Discussion Paper No. 11276
IZA Discussion Paper No. 10861
published as 'Worries across time and age in the German Socio-Economic Panel study' in: Journal of Economic Behavior and Organization, 2018, 181, 323-343
IZA Discussion Paper No. 10521
IZA Discussion Paper No. 4390
IZA Discussion Paper No. 2084
published in: Journal of Income Distribution, 2009, 18(2), 70-91
IZA Discussion Paper No. 2053