| 5976 | Food standards and exports : evidence from China | Mangelsdorf, Axel; Portugal-Perez, Alberto; Wilson, John S. | 2012/02 |
| 5515 | Do private inspection programs affect trade facilitation ? | Velea, Irina; Cadot, Olivier; Wilson, John S. | 2010/12 |
| 4719 | Why trade facilitation matters to Africa ? | Portugal-Perez, Alberto; Wilson, John S. | 2008/09 |