Yulanda, Y. A., Zahar, W., Hakim, M. E., Wiratama, J., & Larassati, P. A. (2026). Characterization of Rare Earth Elements Enrichment Based on Coal Calorific Value Variations. Jurnal Ilmiah Dinamika Rekayasa, 22(2), 136–145. https://doi.org/10.20884/1.jidr.2026.22.2.122