4 IZA Policy Papers
IZA Policy Paper No. 137
IZA Policy Paper No. 111
published in: IZA Journal of European Labor Studies , 2017, 5(17): 1-35.
IZA Policy Paper No. 99
published in: Korea Employment Information Service (ed.), Active Labour Market Policies in OECD Countries. 2014
IZA Policy Paper No. 20
published in: World Bank - Economic Premise, 2010, 42, 1-5