Market Concentration and Persuasive Advertising: A Theoretical Approach
Nelson Sá
Journal Of Economics (Zeitschrift Fur Nationalokonomie), vol. 114, 2015, p. 127-151.

Market Structure and Welfare under Monopolistic Competition
Nelson Sá
Economics Letters, vol. 132, 2015, p. 69-72.

Sustaining the Goose That Lays the Golden Egg: A Continuous Treatment of Technological Transfer
Nelson Sá, Michelle Connolly, Pietro Peretto
Scottish Journal Of Political Economy, vol. 56, 2009, p. 492-507.