“A New Multicarrier Sinusoidal Pulse Width Modulation (SPWM) Strategy Based on Rooted Tree Optimization (RTO) Algorithm for Reducing Total Harmonic Distortion (THD) of Switched-Capacitor Nine-Level Inverter in Grid-Connected PV Systems”. Indonesian Journal of Science and Technology 7, no. 1 (April 1, 2022): 19–36. Accessed June 7, 2026. https://ijost.upi.edu/index.php/ijost/article/view/324.