Kumila, Biaunik Niski, Farhan Adityaa, Fredina Destyofrini, Fitri Nur Indah Sari, Dhita Azzahra Pancorowati, and Hamdan Hadi Kusuma. “Altering Coconut Shell Biomass to High-Ordered Graphitic Carbon With Nickel Catalyzation”. Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 13, no. 2 (December 31, 2023): 119–131. Accessed May 10, 2024. https://journal.unesa.ac.id/index.php/jpfa/article/view/26668.