2 IZA Discussion Papers
IZA Discussion Paper No. 2614
published in: Jacques Silber (ed.), The Measurement of Individual Well-Being and Group Inequalities: Essays in Memory of Z.M. Berrebi, Routledge, 2010
IZA Discussion Paper No. 1521
published in: Review of Economic Studies, 2010, 77 (3), 972-1001