Khadka, Shree Ram, and Phanindra Prasad Bhandari. “Lexicographic Earliest Arrival Contraflow Evacuation Problem on UPL-TTSP Network”. International Journal of Operational Research/Nepal 9, no. 1 (December 31, 2020): 1–7. Accessed November 22, 2024. https://nepjol.info./index.php/ijorn/article/view/51842.