Wang, Lili, Zhe Zhang, and Yong Yin. “A BI-LEVEL PROGRAMMING MODEL FOR SERU ORDER ACCEPTANCE AND SCHEDULING PROBLEM CONSIDERING WORKER ASSIGNMENT”. International Journal of Industrial Engineering: Theory, Applications and Practice 27, no. 4 (April 13, 2021). Accessed May 6, 2024. https://journals.sfu.ca/ijietap/index.php/ijie/article/view/5741.