A. S. Muntohar, J. Ikhsan, H.-J. Liao, A. Jotisankasa, and V. G. Jetten, “Rainfall Infiltration-induced Slope Instability of the Unsaturated Volcanic Residual Soils During Wet Seasons in Indonesia”, Indonesian J. Geosci., vol. 9, no. 1, pp. 71–85, Jan. 2022.