Acharya, Gopal Prasad, and Shree Ram Khadka. “A Review on Multicommodity Urban Evacuation Problem”. Journal of Institute of Science and Technology 21, no. 1 (November 24, 2016): 19–27. Accessed December 6, 2025. https://www.nepjol.info/index.php/JIST/article/view/16032.