R. Listyani, D. Isnawan, and R. E. Wijaya, “The Relationship of Physical Properties of Rock to The Slope Stability of The Progo River Cliff in Sentolo-Sedayu, Kulon Progo, Yogyakarta, Indonesia”, int. j. hydrol. environ. sustain., vol. 2, no. 3, pp. 148–156, Oct. 2023, doi: 10.58524/ijhes.v2i3.331.