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: Jul. 18, 2024. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/1046