Joni Mulyasri, Opim Salim Sitompul, Sutarman, Syahril Efendi. “A Decision Model for Location-Routing Problem With Distance Consideration”. International Journal of Advanced Science and Technology 29, no. 08 (June 1, 2020): 1120 - 1126. Accessed April 27, 2024. http://sersc.org/journals/index.php/IJAST/article/view/19803.