Ahmad, Hafiz Ashfaq, Atif Hussain, and Muhammad Waqar Azam. “Bidirectional Power Flow Control Using Phase Shifting Transformer in Multi-Source Systems”. Pakistan Journal of Engineering and Technology 8, no. 2 (July 3, 2025): 1–9. Accessed July 5, 2025. https://journals.uol.edu.pk/pakjet/article/view/3387.