147 IZA Discussion Papers
IZA Discussion Paper No. 658
published in: Economics Letters, 2003, 80 (2), 247-253.
IZA Discussion Paper No. 646
IZA Discussion Paper No. 645
published in: Journal of Policy Modeling, 2008, 30 (2), 279-300
IZA Discussion Paper No. 636
published in: European Journal of Political Economy, 2005, 21 (1), 1-32
IZA Discussion Paper No. 498
published in: Canadian Journal of Economics, 2009, 42 (4), 1326 - 1346
IZA Discussion Paper No. 371
published in: International Journal of Manpower, 2002, 23 (5), 458-470
IZA Discussion Paper No. 299
published in: Journal of Human Resources, 2004, 39 (4), 1116-1142