Liu, T., Luo, Z., Qin, H., LIM LEONG CHYE, A., & MANAGEMENT, I. S. E. A. (2020). A branch-and-cut algorithm for the two-echelon capacitated vehicle routing problem with grouping constraints. Elsevier.

Liu, Tian, Zhixing Luo, Hu Qin, ANDREW LIM LEONG CHYE, and INDUSTRIAL SYSTEMS ENGINEERING AND MANAGEMENT. A Branch-and-cut Algorithm for the Two-echelon Capacitated Vehicle Routing Problem With Grouping Constraints. Elsevier, 2020.

Liu, Tian, et al. A Branch-and-cut Algorithm for the Two-echelon Capacitated Vehicle Routing Problem With Grouping Constraints. Elsevier, 2020.