Marpaung, Budi, Wisnu Aribowo, Suprayogi Suprayogi, and Abdul Hakim Halim. “An Integrated Inventory and Order Pick-up Model Considering the Capacities of Vendors, the Limited Number of Vehicles, and the Duration of Vehicle Trips for the Multi-Vendor Single-Buyer (MVSB) System”. Prosiding Seminar Nasional Teknik Industri (SENASTI) 1 (October 3, 2023): 98–107. Accessed August 9, 2024. https://ojs.uajy.ac.id/index.php/SENASTI/article/view/7931.