Doloksaribu, Maryati, Bambang Prihandoko, Kuwat Triyana, and Harsojo Harsojo. “Preparation and Characterization of Activated Carbon Based on Coconut Shell for Supercapacitor”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 35, no. 3 (September 7, 2017): 430–437. Accessed April 26, 2024. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8048.