Zafar, U., M. A. Bhatti, and R. Mehmood. “Synthesis of Manganese Oxide from Manganese Ore of Bajaur Agency Khyber Pakhtunkhwa (KPK), Pakistan”. Bangladesh Journal of Scientific and Industrial Research, vol. 58, no. 4, Dec. 2023, pp. 221-30, doi:10.3329/bjsir.v58i4.64335.