Aymen Abdul Kareem, HassanainGh. Hameed, Zaid M. Al-Dulaimi. “Review of Oil Cooling Methods for Large Transformer Coils in the Transmission Grid”. Design Engineering (November 19, 2021): 13756 - 13772. Accessed May 6, 2024. http://www.thedesignengineering.com/index.php/DE/article/view/6494.