63 IZA Discussion Papers
IZA Discussion Paper No. 1152
published in: Scandinavian Journal of Economics, 2004, 106 (3), 417-435
IZA Discussion Paper No. 1096
published in: Economic Journal, 2005, 115 (500), 224-246
IZA Discussion Paper No. 229
published as 'Endogenous fluctuations in unionized economies with productive externalities' in: Economic Theory, 2005, 26 (3), 629-649