Edeh, I., V. Udokwu, and B. J. Egere. “REGENERATION OF DEGRADED TRANSFORMER OIL USING PALM KERNEL SHELL ACTIVATED CARBON AS ADSORBENT”. Academic Journal of Innovative Engineering and Technology, vol. 6, no. 4, Apr. 2026, pp. 35-48, http://cirdjournals.com/index.php/ajiet/article/view/1506.