Janaka Kumara, Kimitoshi Hayano, Yuuki Shigekuni, and Kota Sasaki. 2013. “Physical and Mechanical Properties of Sand-Gravel Mixtures Evaluated from DEM Simulation and Laboratory Triaxial Test”. GEOMATE Journal 4 (8):546-51. https://geomatejournal.com/geomate/article/view/1910.