607 IZA Discussion Papers
IZA Discussion Paper No. 617
IZA Discussion Paper No. 547
IZA Discussion Paper No. 514
IZA Discussion Paper No. 421
fully revised version with Clara Ponsati published in: Mathematical Social Sciences, 2005, 50 (2), 166-180
IZA Discussion Paper No. 234
published in: Schmollers Jahrbuch: Zeitschrift für Wirtschafts- und Sozialwissenschaften / Journal of Applied Social Science Studies, 2001, 121 (3), 53-406
IZA Discussion Paper No. 49
published in: Scandinavian Journal of Economics, 2002, 104 (4), 641-656
IZA Discussion Paper No. 26
published in: Journal of Economic Literature, 2000, 38 (1), 77-114