A Performance Assessment of the Angolan Soccer League
Carlos Pestana Barros, Otávio Henrique dos Santos Figueiredo, Silvestre Dumbo
Applied Economics, vol. 48, 2016, p. 2711-2720.

Efficiency Determinants and Capacity Issues in Angolan Insurance Companies
Carlos Pestana Barros, Silvestre Dumbo, Peter Wanke
South African Journal Of Economics, vol. 82, 2014, p. 455-467.