Poh-Yap S, Johnson-Alengaram U, Hung-Mo K, Zamin-Jumaat M. High strength oil palm shell concrete beams reinforced with steel fibres. Mater. constr. [Internet]. 2017Dec.30 [cited 2025May3];67(328):e142. Available from: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2203