Komhom, Sataporn. “Properties of Charcoal Briquettes from Charcoal Scraps Mixed with Spent Coffee Grounds as An Alternative Fuel”. Journal of Advanced Development in Engineering and Science 14, no. 41 (December 31, 2024): 62–80. accessed September 10, 2026. https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/1197.