Kusumadinata, A., and R. Dalimi. “Specification Design and Techno-Economic Analysis of Green Distribution Transformers With Amorphous Iron Cores and Natural Ester Oil for Sustainable Power Systems”. International Journal of Electrical, Computer, and Biomedical Engineering, vol. 3, no. 1, May 2025, pp. 19–42, doi:10.62146/ijecbe.v3i1.88.