Prasetyo, Tegar Arifin. “Particle Swarm Optimization and Genetic Algorithm for Big Vehicle Problem: Case Study in National Pure Milk Company”. (IJCSAM) International Journal of Computing Science and Applied Mathematics, vol. 7, no. 1, Feb. 2021, pp. 28-32, https://journal.its.ac.id/index.php/ijcsam/article/view/4605.