Sudarma, Andi Firdaus, Edy Hartulistiyoso, Yohanes Aris Purwanto, Leopold Oscar Nelwan, Obie Farobie, Nono Darsono, Khuzaimah Arifin, et al. “Influence of Inorganic Content on Hydrochar Quality from High-Ash Agar Extraction Waste via Hydrothermal Carbonization”. SINERGI 30, no. 3 (September 8, 2026): 731–746. Accessed November 15, 2026. https://publikasi.mercubuana.ac.id/index.php/sinergi/article/view/34580.