Babangida B., Baraya Y. M., Ohanuba, O. F., Hali, A. I., and Malumfashi, M. L. 2023. “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 (2):080-111. https://doi.org/10.56919/usci.2322.011.