Amalia, Atika Dwi Hanun, Herry Suprajitno, and Asri Bekti Pratiwi. “Solving Close-Open Mixed Vehicle Routing Problem Using Bat Algorithm”. Contemporary Mathematics and Applications (ConMathA) 2, no. 1 (May 20, 2020): 46–56. Accessed November 27, 2024. https://e-journal.unair.ac.id/CONMATHA/article/view/19301.