105 IZA Discussion Papers
IZA Discussion Paper No. 479
published in: Industrial Relations, 2004, 43 (2), 305-323
IZA Discussion Paper No. 393
IZA Discussion Paper No. 229
published as 'Endogenous fluctuations in unionized economies with productive externalities' in: Economic Theory, 2005, 26 (3), 629-649
IZA Discussion Paper No. 225
published in: Labour Economics, 2001, 8 (4), 475-501
IZA Discussion Paper No. 150