N Sidek, Mohamed Ahmed Hafez, A S Abdul Rahman, N.N. Ahmad Nazmi (2022) “Evaluation Performance of Polyurethane (PU) and Concrete Foam as Filler for Road Embankment: - A Soft Soil Treatment Solution”, Mathematical Statistician and Engineering Applications, 71(4), pp. 7199–7208. doi: 10.17762/msea.v71i4.1338.