SIEMELINK, H. FUELS IN THE NEXT MILLENIUM. Clean Air Journal, [S. l.], v. 10, n. 5, p. 24–31, 2000. DOI: 10.17159/caj/2000/10/5.7093. Disponível em: https://cleanairjournal.org.za/article/view/7093. Acesso em: 20 apr. 2024.