Amallynda, Ikhlasul. “The Discrete Particle Swarm Optimization Algorithms for Permutation Flowshop Scheduling Problem”. Jurnal Teknik Industri 20, no. 2 (August 31, 2019): 105–116. Accessed November 24, 2024. https://ejournal.umm.ac.id/index.php/industri/article/view/7986.