I Wayan Ariyana Basoka, Kiyonobu Kasama, Zentaro Furukawa, Noriyuki Yasufuku, and Ahmad Rifa’i. “THE PHYSICAL AND MECHANICAL PROPERTIES OF SINGLE PUMICE SAND PARTICLE”. GEOMATE Journal, vol. 26, no. 115, Mar. 2024, pp. 73-80, https://geomatejournal.com/geomate/article/view/4497.