Babangida B., Baraya Y. M., Ohanuba, O. F., Hali, A. I., and Malumfashi, M. L. “An Order Inventory Model for Delayed Deteriorating Items With Two-Storage Facilities, Time-Varying Demand and Partial Backlogging Rates Under Trade-Credit Policy”. UMYU Scientifica 2, no. 2 (June 30, 2023): 080–111. Accessed November 21, 2024. https://scientifica.umyu.edu.ng/index.php/scientifica/article/view/96.