William, W., T.J. Ai, and W. Lee. “A Joint Replenishment Inventory Model to Control Multi-Item Medicines With Consideration of Space Requirements in the Hospital”. International Journal of Industrial Engineering and Engineering Management 2, no. 2 (December 13, 2020): 39–48. Accessed September 1, 2024. https://ojs.uajy.ac.id/index.php/IJIEEM/article/view/4190.