26 IZA Discussion Papers
IZA Discussion Paper No. 4206
published in: Economics of Education Review, 2011, 30 (6), 1348-1369
IZA Discussion Paper No. 3723
published in: Economics Letters, 2010, 106 (1), 61-63
IZA Discussion Paper No. 3710
IZA Discussion Paper No. 2248
published in: American Economic Review, 2006, 96 (2), 331-336
IZA Discussion Paper No. 1099
published in: Applied Economics Quarterly Supplement, 2004, 55, 83-112
IZA Discussion Paper No. 1059
published in: David P. Conradt et al., A Precarious Victory: Schroeder and the German Elections of 2002, New York, Berghahn Books, 2005
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