Po-Ngam, Sakorn. “The Simplified Control of Three-Phase Four-Leg Shunt Active Power Filter for Harmonics Mitigation, Load Balancing and Reactive Power Compensation”. ECTI Transactions on Electrical Engineering, Electronics, and Communications 13, no. 1 (February 25, 2015): 35–41. Accessed May 19, 2024. https://ph02.tci-thaijo.org/index.php/ECTI-EEC/article/view/170984.