ANROKHI, M. S.; ABDILLAH, O. B.; NOOR, F. A.; FITRIANI, P.; ISKANDAR, F. Electrochemical Study of Demineralized Bituminous Coal by Alkali-Acid Leaching Assisted Low-Frequency Ultrasonication. ITB Graduate School Conference, [S. l.], v. 3, n. 1, p. 868–875, 2023. Disponível em: https://gcs.itb.ac.id/proceeding-igsc/index.php/igsc/article/view/200. Acesso em: 8 oct. 2025.