Jahiding, M., Ida Usman, Ratih Samsusih Rizki, Haryani, and Mashuni. “Pengaruh Kosentrasi Zeolit Terhadap Kualitas Bio-Oil Yang Diproduksi Dari Limbah Sabut Kelapa Muda (Cocos Nucifera) Menggunakan Metode Piro-Katalitik : (Effect of Zeolite Concentration on the Quality of Bio-Fuel Produced from Coconut Fiber (Cocos Nucifera) Using the Piro-Catalytic Method)”. Gravitasi 19, no. 2 (December 31, 2020): 29-35. Accessed April 19, 2024. https://bestjournal.untad.ac.id/index.php/GravitasiFisika/article/view/15359.