225 IZA Discussion Papers
IZA Discussion Paper No. 875
revised version published in: European Journal of Law and Economics, 2006, 22, 49-71
IZA Discussion Paper No. 844
revised version published as IZA DP 2293 and in: American Economic Review, 2007, 97 (3), 999 - 1012
IZA Discussion Paper No. 765
improved version available as IZA Discussion Paper No. 2124
IZA Discussion Paper No. 647
revised version published in: Journal of Economics and Management Strategy, 2005, 14 (1), 187-207
IZA Discussion Paper No. 605
revised version published in: International Journal of Human Resource Management, 2005, 16 (1), 104-119