4 IZA Discussion Papers
IZA Discussion Paper No. 14128
IZA Discussion Paper No. 10532
IZA Discussion Paper No. 5571
published in: International Journal of Manpower, 2012, 33 (1), 118-136
IZA Discussion Paper No. 3767
revised version published as 'The Relative Effectiveness of Selected Active Labor Market Programs: An Empiriccal Investigation for Germany' in: Manchester School, 2011, 79(6), 1262-1293