DOWNING U., Jaime. Chemical engineering: past, present and future. Nexo Revista Científica, [S. l.], v. 34, n. 03, p. 06–08, 2021. DOI: 10.5377/nexo.v34i03.11847. Disponível em: https://camjol.info/index.php/NEXO/article/view/11847. Acesso em: 6 dec. 2025.