Hakim AF, Andriyah L, Oediyani S, Lalasari LH, Sulistiyono E, Irawan J, et al. Study of Iron and Calcium Removal on Manganese Sulfate Precursors for Battery Cathode Raw Material Applications. Metalurgi [Internet]. 2025 Jun. 23 [cited 2026 Jun. 26];39(2):73-8. Available from: https://ejournal.brin.go.id/metalurgi/article/view/16280