panjumpa N, Chatthaworn R. Optimal Asset Management of Distribution Transformers Considering Life Cycle Costs : doi: 10.14456/mijet.2021.20. Engineering Access [internet]. 2021 May 24 [cited 2026 Sep. 16];7(2):159-68. available from: https://ph02.tci-thaijo.org/index.php/mijet/article/view/243953