Wan Busu WN, Chen RS, Shahdan D, Mohd Yusof MJ, Saad MJ, Ahmad S. Statistical Optimization Using Response Surface Methodology for Enhanced Tensile Strength of Polyethylene/Graphene Nanocomposites. IJIE. 2021;13(6):109-117. Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/6807