Tareen, Afrasiab Khan, Noppawan Danbamrongtrakool, Imrana Niaz Sultan, Nicom Laemsak, Sarote Sirisansaneeyakul, Wirat Vanichsriratana, and Pramuk Parakulsuksatid. “Utilization of urea as a nitrogen source for ethanol production from oil palm trunk using simultaneous saccharification and fermentation”. Agriculture and Natural Resources 55, no. 3 (June 30, 2021): 448–455. accessed December 8, 2025. https://li01.tci-thaijo.org/index.php/anres/article/view/251801.