Rina Handayani, and Manaek Hamonangan Sihombing. “Planning of Optimal Raw Materials Inventory Using the Marcov Chain Method”. Journal of Science Technology (JoSTec) 4, no. 1 (December 10, 2022): 151–161. Accessed December 22, 2024. https://ejournal.ipinternasional.com/index.php/jostec/article/view/157.