65 IZA Discussion Papers
IZA Discussion Paper No. 2434
published in: Economics of Education Review, 2010, 29 (3), 319-328, revised version available here
IZA Discussion Paper No. 2429
published in: Economic Inquiry, 2008, 46 (1), 2-12
IZA Discussion Paper No. 1652
published in: Journal of the Royal Statistical Society, Series A (Statistics in Society), 2007, 170 (3), 623-646
IZA Discussion Paper No. 1453
published in: Journal of Law and Economics, 2006, 48(1), 1-39
IZA Discussion Paper No. 1186