Directed Technical Change and Environmental Quality
Óscar Afonso, Liliana Fonseca, Manuela Magalhães, Paulo Vasconcelos
Portuguese Economic Journal, vol. 20, 2021, p. 71-97.

The role of intellectual property rights in a directed technical change model
Óscar Afonso, Manuela Magalhães
International Journal Of Finance And Economics, vol. 26, 2021, p. 2142-76.

How powerful are network effects? A skill-biased technological change approach
Óscar Afonso, Manuela Magalhães
Macroeconomic Dynamics, vol. 28, 2020, p. 882-919.

Industry Concentration and Wage Inequality: A Directed Technical Change Approach
Manuela Magalhães, Tiago Neves Sequeira, Óscar Afonso
Open Economies Review, vol. 30, 2019, p. 457-481.