“An Inventory Ordering Policies of Delayed Deteriorating Items with Ramp Type Demand, Price Discount and Complete Backlogging” (2026) KASU JOURNAL OF MATHEMATICAL SCIENCE (Maths Access), 6(2), pp. 11–22. Available at: https://mathsaccess.org.ng/index.php/kjms/article/view/84 (Accessed: 9 June 2026).