MDOE, J.; MINJA, R. .; DANIEL, L. . Wet Oxidation of Maleic Acid by a Pumice Supported Copper (II) Shiff Base Catalyst. Tanzania Journal of Science, [S. l.], v. 38, n. 2, p. 28–38, 2021. Disponível em: https://tjs.udsm.ac.tz/index.php/tjs/article/view/341. Acesso em: 8 jul. 2025.