Roslee, Noor Shafini, and Salinah Dullah. “Potential Mixture of Coir Fibre and Palm Kernel Shell in Concrete: A Review”. Borneo Journal of Medical Sciences (BJMS), no. 1 (September 24, 2018): 59. Accessed May 28, 2025. https://jurcon.ums.edu.my/ojums/index.php/bjms/article/view/1401.