46 IZA Discussion Papers
IZA Discussion Paper No. 4723
revised version published in: Journal of Applied Econometrics, 2014, 29 (1), 91-109
IZA Discussion Paper No. 3818
published in: Economic Journal, 2010, 120(546), F229-F255
IZA Discussion Paper No. 1901
published in: Economic Journal, 2006, 116 (510), C63-C76
IZA Discussion Paper No. 1749
published in: Teachers College Record, 2006, 108, 2550-2581
IZA Discussion Paper No. 1519
published in: Labour Economics, 2011, 18 (4), 474-486
IZA Discussion Paper No. 739