Tambunan, Hardiansyah, et al. “Characteristics of Agricultural and Plantation Wastes As Solid Biomass Energy Feedstock: A Systematic Review”. Jurnal Konversi Energi Dan Manufaktur, vol. 10, no. 2, July 2025, pp. 150 – 161, doi:10.21009/JKEM.10.2.6.