HABIB, U., M. HABIB, and A. U. KHAN. “Factors Influencing the Performance of Coal Briquettes”. Walailak Journal of Science and Technology (WJST), vol. 11, no. 1, Oct. 2013, pp. 1-5, https://wjst.wu.ac.th/index.php/wjst/article/view/417.