Panpean, C., P. Prakobkaew, C. Sumpavakup, S. Songtrai, N. Watjanatepin, K. 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, vol. 24, no. 1, Feb. 2026, doi:10.37936/ecti-eec.2026241.261151.