5 IZA Discussion Papers
IZA Discussion Paper No. 8559
forthcoming in: Industrial and Labor Relations Review
IZA Discussion Paper No. 7903
IZA Discussion Paper No. 6715
IZA Discussion Paper No. 6566
IZA Discussion Paper No. 5830
published in: Social Science and Medicine, 2011, 73 (4), 535 - 539, [view press coverage]