3 IZA Discussion Papers
IZA Discussion Paper No. 12755
forthcoming in: Evaluation Review
IZA Discussion Paper No. 9931
revised version published in: Journal of Economic Inequality, First Online: 24 August 2018, doi: 10.1007/s10888-018-9396-8
IZA Discussion Paper No. 7142
published in: Journal of Chinese Economic and Business Studies, 2014, 12(1), 29-45