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 May 28, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/11933.