Adhitya Yoga Purnama, Noriyuki Yasufuku, and Ahmad Rifa’i. “EVALUATION OF FILLER MATERIAL BEHAVIOR IN PRE-BORED PILE FOUNDATION SYSTEM DUE TO SLOW CYCLIC LATERAL LOADING IN SANDY SOIL”. GEOMATE Journal 16, no. 58 (June 29, 2019): 90–96. Accessed August 14, 2022. https://geomatejournal.com/geomate/article/view/2717.