Ha, Quang Minh, Duy Manh Vu, Xuan Thanh Le, and Minh Ha Hoang. “THE TRAVELING SALESMAN PROBLEM WITH MULTI-VISIT DRONE”. Journal of Computer Science and Cybernetics 37, no. 4 (October 12, 2021): 465–493. Accessed April 18, 2024. https://vjs.ac.vn/index.php/jcc/article/view/16180.