125 IZA Discussion Papers
IZA Discussion Paper No. 716
published in: Journal of Applied Econometrics, 2009, 24 (2), 338-365.
IZA Discussion Paper No. 677
IZA Discussion Paper No. 485
published in: European Economic Review, 2006, 50 (3), 695-736
IZA Discussion Paper No. 261
published in: Scandinavian Journal of Economics, 2005, 107 (2), 375-394
IZA Discussion Paper No. 218
published in: Journal of Business and Economic Statistics, 2004, 22 (3), 312-321