5 IZA Discussion Papers
IZA Discussion Paper No. 4494
published in: Journal of International Trade & Economic Development, 2012, 21 (3), 409 - 469
IZA Discussion Paper No. 3807
IZA Discussion Paper No. 3788
IZA Discussion Paper No. 3207
revised version published in: Journal of International Trade and Economic Development, 2011, 20 (4), 467 - 505
IZA Discussion Paper No. 993