Product Standards and Firms' Export Decisions
Ana Margarida Fernandes, Esteban Ferro, John S. Wilson
World Bank Economic Review, vol. 33, 2019, p. 353-374.

Aid to the Services Sector: Does It Affect Manufacturing Exports?
Esteban Ferro, Alberto Portugal-Perez, John S. Wilson
World Economy, vol. 37, 2014, p. 530-541.

Export Performance and Trade Facilitation Reform: Hard and Soft Infrastructure??
Alberto Portugal-Perez, John S. Wilson
World Development, vol. 40, 2012, p. 1295-1307.