Ismail, M. I., and M. Ibrahim. “Analysis on Lighweighting Approach Topology Optimization Design for Additive Manufacturing (DfAM)”. Research Progress in Mechanical and Manufacturing Engineering, vol. 2, no. 2, Jan. 2022, pp. 860-8, https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/4790.