Letchumanan, S., Badarulzaman, N. A., Seli, H., & Job Ajala, A. (2023). Characterisation of Minerals and Other Properties of Mukah Coal. Journal of Advanced Mechanical Engineering Applications, 4(1), 1-11. https://penerbit.uthm.edu.my/ojs/index.php/jamea/article/view/9038