Saputra, Bagus, et al. “Effects of Torrefaction Temperature on the Characteristics of Betung (Dendrocalamus Asper) Bamboo Pellets”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 11, no. 2, June 2022, pp. 339-53, doi:10.23960/jtep-l.v11i2.339-353.