Hryshchuk, M., O. Rubanenko, and O. Rubanenko. “Planning of Maintenance of Power Transformers on the Results of Control of Their Frequency Characteristics”. Lighting Engineering & Power Engineering 3, no. 56 (February 14, 2020): 92–98. Accessed May 12, 2025. https://lepe.kname.edu.ua/index.php/lepe/article/view/423.