Chiu, H. N., Y. S. Lee, and M. H. Hwang. “AN EFFICIENT HEURISTIC METHOD FOR DETERMINING MULTI-ECHELON DISTRIBUTION QUANTITIES AND VEHICLE ROUTES”. International Journal of Industrial Engineering: Theory, Applications and Practice, vol. 13, no. 2, Feb. 2022, pp. 188-97, doi:10.23055/ijietap.2006.13.2.436.