24 IZA Discussion Papers
IZA Discussion Paper No. 6784
published in: International Economic Review, 2015, 56(2), 537-564
IZA Discussion Paper No. 4016
revised version published in: Public Choice,2012, 151 (3-4), 465 - 495
IZA Discussion Paper No. 3021
published in: Journal of Public Economics, 2010, 94 (11-12), 911-920
IZA Discussion Paper No. 1045
published in: Economica, 2008, 75 (297), 39-59
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