S. S. N. Shamsuddin and N. A. . Samiran, “Effect of Air and Steam on the Performance of Syngas Yield Using Downdraft Gasification Method”, peat, vol. 2, no. 2, pp. 983–1000, Dec. 2021, Accessed: Aug. 15, 2026. [Online]. Available: https://periodical.uthm.edu.my/index.php/peat/article/view/1046