Sadisun, Imam A., Bandono Bandono, H. Shimada, M. Ichinose, and K. Matsui. 2010. “Physical Disintegration Characterization of Mudrocks Subjected to Slaking Exposure and Immersion Tests”. Indonesian Journal on Geoscience 5 (4):219-25. https://doi.org/10.17014/ijog.5.4.219-225.