4 IZA Discussion Papers
IZA Discussion Paper No. 7502
published in: Economics Bulletin, 2013, 33 (3), 1832-1839
IZA Discussion Paper No. 7474
published in: Industrial Relations, 2014, 53 (1), 125-157.
IZA Discussion Paper No. 6274
published in: Journal for Labour Market Research, 2012, 45 (2), 161-170
IZA Discussion Paper No. 6258
published in: Economic Journal, 2014, 124 (579), 1106-1145