Ju-Hyung Lee, Jin-Ung Do, and Sung-Ryul Kim. “A COMPARATIVE STUDY ON THE RESISTANCES OF BUCKET FOUNDATION IN SAND WITH DIFFERENT INSTALLATION METHODS”. GEOMATE Journal, vol. 8, no. 15, Nov. 2021, pp. 1186-9, https://geomatejournal.com/geomate/article/view/1908.