1.
Nguyen NQ, Nguyen DN, Nguyen KP. Two-Echelon Multi-Trip Multi-Traffic Pickup and Delivery Problem with Time Windows and Synchronization. SSAD [Internet]. 2021 May 15 [cited 2025 Jun. 18];31(1):25-32. Available from: https://jst.vn/index.php/ssad/article/view/92