28 IZA Discussion Papers
IZA Discussion Paper No. 4222
IZA Discussion Paper No. 4222
IZA Discussion Paper No. 3867
IZA Discussion Paper No. 3178
IZA Discussion Paper No. 2412
published in: Journal of Research on Educational Effectiveness, 2008, 1(1), 1-23
IZA Discussion Paper No. 2251
published in: Journal of the Royal Statistical Society, Series A, 2006, 169 (4), 829-848
IZA Discussion Paper No. 1799
published in: Review of Economic and Statistics, 2006, 88(3), 472-481
IZA Discussion Paper No. 1146
published in: American Economic Review, 2009, 99 (4), 1384-1414
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