Yousefikhoshbakht, Majid, Farzad Didehvar, and Farhad Rahmati. “An Effective Rank Based Ant System Algorithm for Solving the Balanced Vehicle Routing Problem”. International Journal of Industrial Engineering: Theory, Applications and Practice 23, no. 1 (March 24, 2016). Accessed May 21, 2024. https://journals.sfu.ca/ijietap/index.php/ijie/article/view/1119.