A. Othuman Mydin, M, and N Mohd Zamzani. “Coconut Fiber Strengthen High Performance Concrete: Young’s Modulus, Ultrasonic Pulse Velocity and Ductility Properties”. International Journal of Engineering and Technology 7, no. 2.23 (April 20, 2018): 284–287. Accessed February 23, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/11933.