Tayon, Felix, et al. “Comparison of Lignin Degradation in Empty Oil Palm Bunches Biomass With Alkaline Pretreatment”. MUNISI: Military Mathematics and Natural Sciences, vol. 2, no. 1, Jan. 2025, pp. 1-6, https://upgradeojs.rifqisyams.id/index.php/munisi/article/view/19565.