Yoo, Woo-Sik, Jae-Gon Kim, and Chongman Kim. “A Combined Heuristic Approach to Nonlinear Fixed-Charge Capacitated Network Design Problem”. International Journal of Industrial Engineering: Theory, Applications and Practice 23, no. 1 (March 24, 2016). Accessed May 3, 2024. https://journals.sfu.ca/ijietap/index.php/ijie/article/view/2188.