A. N. Adnan and A. Ismail, “Production Leveling System Implementation at Mixed Model Product with Heterogeneous Cycle Time for Single Operation Line”, IJIE, vol. 13, no. 2, pp. 196–201, Dec. 2020, Accessed: Aug. 07, 2026. [Online]. Available: https://journal.uthm.edu.my/index.php/ijie/article/view/7642