Rattanamanee, Tarit, Suebsak Nanthavanij, and Aussadavut Dumrongsiri. “HEURISTIC PROCEDURE FOR MULTI-WORKDAY VEHICLE ROUTING PROBLEM WITH PRE-ASSIGNED WORKERS AND MANUAL UNLOADING”. International Journal of Industrial Engineering: Theory, Applications and Practice 27, no. 3 (December 19, 2020). Accessed April 30, 2026. https://ijietap.com/index.php/ijie/article/view/6207.