4 IZA Policy Papers
IZA Policy Paper No. 95
IZA Policy Paper No. 80
published in: IEMed Mediterranean Yearbook 2014, 265-271
IZA Policy Paper No. 65
published in: Intereconomics, 2013, 48 (4), 230-235 [Details & Download]
IZA Policy Paper No. 63
published in Korean: The HRD Review, 2013, 7 (7), 126-151