Green certificate trading. Journal of Energy in Southern Africa, [S. l.], v. 22, n. 1, p. 42–54, 2011. DOI: 10.17159/2413-3051/2011/v22i1a3201. Disponível em: https://energyjournal.africa/article/view/3201. Acesso em: 24 nov. 2024.