Roslee, D., Sabudin, S., Noor Ariffin, N. A., Jamari, F. N., & Mohideen Batcha, M. F. (2018). Design and Development of Downdraft Gasifier to Generate Producer Gas. International Journal of Integrated Engineering, 10(5). https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3045