“ON INVENTORY MODEL FOR DETERIORATING ITEMS, EXPONENTIAL DECREASING DEMAND AND TIME VARYING HOLDING COST UNDER PARTIAL BACKLOGGING WITH SHORTAGES”, TNAMP, vol. 18, pp. 139–142, Dec. 2022, Accessed: Nov. 24, 2024. [Online]. Available: https://nampjournals.org.ng/index.php/tnamp/article/view/165