11.605 IZA Discussion Papers
IZA Discussion Paper No. 37
IZA Discussion Paper No. 36
IZA Discussion Paper No. 26
published in: Journal of Economic Literature, 2000, 38 (1), 77-114
IZA Discussion Paper No. 21
published in: Review of Economics of the Household, 2003, 1 (1-2), 77-110
IZA Discussion Paper No. 12