Pratomo, D.B.S. (2026) “Finite Element Analysis of 20×20 ft Container Flat Wagon Underframe Structure Using S355J2 Steel”, Journal of Sustainable Materials Processing and Management, 6(1), pp. 20–28. Available at: https://journal.uthm.edu.my/index.php/jsmpm/article/view/25258 (Accessed: 12 August 2026).