Duanaputri, Rohmanita, et al. “A Method for Estimating the Remaining Life of Power Transformers Considering Loading, Hotspot Temperature, and Oil Assessment ”. Sustinere: Journal of Environment and Sustainability, vol. 8, no. 3, Dec. 2024, pp. 368-74, doi:10.22515/sustinere.jes.v8i3.449.