Setiawan, Y. and Santoso, W. 2026. The Role of Planning Management in Implementing Digital Transformation to Improve Operational Efficiency in Nickel Manufacturing Companies. EKOMA : Jurnal Ekonomi, Manajemen, Akuntansi. 5, 6 (Sep. 2026), 9913–9924. DOI:https://doi.org/10.56799/ekoma.v5i6.18480.