The Soil-Root Strength Performance of Alternanthera Ficoidea and Zoysia Japonica as Green Roof VegetationMuhamad Firdaurs Abdullah, Hartini Kasmin, Nor Azizi Yusoff, Safwan Mustafar, Shazren Salimun, Zaidi Embong and Hanim AhmadMATEC Web Conf., 103 (2017) 04018DOI: https://doi.org/10.1051/matecconf/201710304018