Samsuddin, Sherylaidah, et al. “A REVIEW OF SINGLE AND POPULATION-BASED METAHEURISTIC ALGORITHMS SOLVING MULTI DEPOT VEHICLE ROUTING PROBLEM”. International Journal of Software Engineering and Computer Systems, vol. 4, no. 2, Jan. 2019, pp. 80-93, https://journal.ump.edu.my/ijsecs/article/view/1270.