Gani, M. Ulum, and Widodo Widodo. “Experiment of Industrial Waste Absorption Using Activated Carbon from Coal of Tanjung Tabalong, South Kalimantan”. Indonesian Journal on Geoscience 6, no. 4 (December 28, 2011): 239–248. Accessed February 6, 2025. https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/130.