Pratama, Ryan Keane Mahardika, Naufal Dimas Syahputra, Muhammad Yaser Mufid, Mahesa Surya Pratama, Dwi Amalia, Ekha Yogafanny, and Nina Anggita Wardani. “Influence of PH and Pre-Treatment on Biogas Production in Anaerobic Digestion: A Review”. RSF Conference Series: Engineering and Technology 4, no. 1 (October 15, 2025): 220–227. Accessed October 20, 2025. https://proceeding.researchsynergypress.com/index.php/cset/article/view/1036.