Eso, Rosliana, Luvi, and Ririn. “Efek Variasi Konsentrasi Zat Aktivator H3PO4 Terhadap Morfologi Permukaan Dan Gugus Fungsi Karbon Aktif Cangkang Kemiri: (The Effect of H3PO4 Variation on Morphology and Function Group of Activated Carbon of Hazelnut Shell)”. Gravitasi 20, no. 1 (July 1, 2021): 19-23. Accessed July 3, 2024. https://bestjournal.untad.ac.id/index.php/GravitasiFisika/article/view/15519.