4 IZA Discussion Papers
IZA Discussion Paper No. 12096
The Antitrust Bulletin, 64(4): 540-565
IZA Discussion Paper No. 11608
IZA Discussion Paper No. 6939
published in: Review of International Economics, 2013, 21 (2), 311–325
IZA Discussion Paper No. 204
published in: Review of Development Economics, 2003, 7 (1), 30-43