Ghahremani-Gol, Hajar, Farzad Didehvar, and Asadollah Razavi. “Vehicle Routing Problem for Minimizing Consumption of Energy in Three Dimensional Space”. Kuwait Journal of Science 43, no. 2 (May 9, 2016). Accessed April 24, 2026. https://journalskuwait.org/kjs/index.php/KJS/article/view/874.