Wangsirikul, Piyaporn, and Teerapat Wangsirikul. “Optimization of Sugar Production from Oil Palm Empty Fruit Bunch by Cellulase from Aspergilus niger C-1184”. Princess of Naradhiwas University Journal 12, no. 2 (May 13, 2020): 259–276. accessed August 27, 2026. https://li01.tci-thaijo.org/index.php/pnujr/article/view/233723.