Ngoc Trung Ngo, Cholachat Rujikiatkamjorn, and Buddhima Indraratna. “DEM MODELLING OF GEOCELL-STABILISED SUB-BALLAST UNDER CYCLIC LOADING”. GEOMATE Journal, vol. 12, no. 31, Nov. 2016, pp. 23-29, https://geomatejournal.com/geomate/article/view/1061.