Arifin, Y. F., M. Arsyad, J. Monica, and S. S. Agus. “Volume Change in Compacted Claystone-Bentonite Mixtures As Affected by the Swamp Acidic Water”. Communications in Science and Technology, Vol. 6, no. 2, Dec. 2021, pp. 80-90, doi:10.21924/cst.6.2.2021.540.