3 IZA Discussion Papers
IZA Discussion Paper No. 1189
published in: Review of Economic Studies, 2009, 76 (2), 731-759
IZA Discussion Paper No. 510
published in: IMF Staff Papers, 2002, 49 (3), 339-362
IZA Discussion Paper No. 496
published in: Journal of Development Economics, 2006, 80 (2), 389-427