BENISHEIKH, UMAR ALI, and Zulkurnain Abdul-Malek. “Leakage Current Harmonic Index As A Diagnostic Technique for Tool to Assess the Surface Condition Assessment of Aged Insulator Surface Under Varying Humidity”. ELEKTRIKA- Journal of Electrical Engineering 23, no. 1 (April 27, 2024): 141–147. Accessed July 1, 2024. https://elektrika.utm.my/index.php/ELEKTRIKA_Journal/article/view/529.