PETRUS, H. T. B. M.; SARI, D. P.; YULIANSYAH, A. T.; MUFAKHIR, F. R.; ASTUTI, W.; ISKANDAR, Y.; BRATAKUSUMA, D.; VIRDHIAN, S. Manganese Recovery from Hydrocracking Spent Catalyst Using Citric Acid and Its Kinetics. International Series on Interdisciplinary Science and Technology, [S. l.], v. 4, n. 2, p. 226–230, 2019. Disponível em: http://insist.unila.ac.id/index.php/ojs/article/view/164. Acesso em: 28 oct. 2025.