3 IZA Discussion Papers
IZA Discussion Paper No. 626
revised version published in: Annales d'Economie et de Statistique, 2003, 71/72, 245-266
IZA Discussion Paper No. 436
revised version published in: Labour Economics, 2005, 12 (1), 73-97
IZA Discussion Paper No. 193
substantially revised version published as 'Gender wage gap studies: Consistency and decomposition' in: Empirical Economics, 2008, 35 (1), 63-76