57 IZA Discussion Papers
IZA Discussion Paper No. 5069
IZA Discussion Paper No. 3236
published in: Acta Sociologica, 2008, 51 (2), 123-143
IZA Discussion Paper No. 2651
IZA Discussion Paper No. 2603
revised version published as "Geographical Differences in Italian Students' Mathematical Competencies: Evidence from PISA 2003" in: Giornale degli Economisti e Annali di Economia, 2007, 66(3), 299-333
IZA Discussion Paper No. 1775
IZA Discussion Paper No. 1122
published in: Review of Economics and Statistics, 2007, 89 (4), 721-736
IZA Discussion Paper No. 333
published in: Journal of the Royal Statistical Society, Series A. (Statistics in Society), 2004, 167 (1), 157-178
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