R.C Omar, Hairin Taha, R. Roslan, and I.N.Z Baharudin. “STUDY OF BIO-GROUT TREATED SLOPE MODELS UNDER SIMULATED RAINFALL”. GEOMATE Journal, vol. 14, no. 43, Mar. 2018, pp. 154-9, https://geomatejournal.com/geomate/article/view/1701.