30,000 Minimum Wages: The Economic Effects of Collective Bargaining Extensions
Pedro Silva Martins
British Journal Of Industrial Relations, vol. 59, 2021, p. 335-369.

Effects of self-employment on hospitalizations: instrumental variables analysis of social security data
Judite Gonçalves, Pedro Silva Martins
Small Business Economics, vol. 57, 2021, p. 1527-1543.