Mohamad Azman, Nurul Alia, and Nasrul Fikry Che Pa. 2021. “Production of Smokeless Biofuel Briquettes from Palm Kernel Shell Assisted With Slow Pyrolysis Treatment”. Progress in Engineering Application and Technology 2 (1): 38-49. https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/780.