Panpean, Chakrit, Pokpong Prakobkaew, Chaiyut Sumpavakup, Sanpoom Songtrai, Napat Watjanatepin, Krittapas Chaiyaphun, and jeerawan homjan. “Improving the PQ Harmonic Detection Method for Active Power Filters in Single-Phase Power Systems”. ECTI Transactions on Electrical Engineering, Electronics, and Communications 24, no. 1 (February 27, 2026). accessed August 28, 2026. https://ph02.tci-thaijo.org/index.php/ECTI-EEC/article/view/261151.