“AN EOQ MODEL FOR NON-INSTANTANEOUS DETERIORATING ITEM WITH TWO- PHASE DEMAND RATES, TIME-DEPENDENT LINEAR HOLDING COST AND TIME- DEPENDENT PARTIAL BACKLOGGING RATE UNDER TRADE CREDIT POLICY”. The Transactions of the Nigerian Association of Mathematical Physics 17 (December 1, 2021): 131–144. Accessed December 22, 2024. https://nampjournals.org.ng/index.php/tnamp/article/view/203.