8 IZA Discussion Papers
IZA Discussion Paper No. 16722
IZA Discussion Paper No. 6535
revised version published in: Labour Economics, 2013, 21 (1), 25-41
IZA Discussion Paper No. 6362
published in: Oxford Bulletin of Economics and Statistics, 2016, 78 (6), 853-876
IZA Discussion Paper No. 3514
IZA Discussion Paper No. 3324
published in: German Economic Review, 2010, 11 (1), 37 - 59
IZA Discussion Paper No. 2970
IZA Discussion Paper No. 2864
IZA Discussion Paper No. 2455
published in: Scandinavian Journal of Economics, 2007, 109 (4), 779 - 806