Aydemir, Erdal, Fevzi Bedir, Gultekin Ozdemir, and Abdullah Eroglu. “An EPQ Model With Imperfect Items Using Interval Grey Numbers”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 5, no. 1 (October 25, 2014): 21–32. Accessed June 27, 2025. https://ijocta.org/index.php/files/article/view/204.