Manna P, Manna SK, Giri BC. An economic order quantity model with ramp type demand rate, constant deterioration rate and unit production cost. YUJOR [Internet]. 2016 Aug. 1 [cited 2025 Aug. 26];26(3):305-16. Available from: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/469