JIMENEZ-ISLAS, D.; PEREZ-ROMERO, M. E.; CRUZ, I. V.; FLORES-ROMERO, M. B. Development of Biofuels Research in South Africa. International Journal of Energy Economics and Policy, [S. l.], v. 11, n. 5, p. 99–105, 2021. Disponível em: https://econjournals.com/index.php/ijeep/article/view/11454. Acesso em: 28 jan. 2023.