Lam, Tian Fook, and Jamaludin bin Mohamad Yatim. “Mechanical Properties of Kenaf Fiber Reinforced Concrete With Different Fiber Content and Fiber Length”. Journal of Asian Concrete Federation, vol. 1, no. 1, Sept. 2015, pp. 11-21, doi:10.18702/acf.2015.09.1.11.