Hidayah, Nurul, et al. “Optimization of Biological Delignification of Sugar Palm (Arenga Pinnata) Stems Using Streptomyces Griseorubens for Bioethanol Production”. Bioscientist : Jurnal Ilmiah Biologi, vol. 14, no. 3, Sept. 2026, pp. 1544-57, doi:10.33394/bioscientist.v14i3.22366.