E. . Rahmini, E. . Girsang, and S. D. . Siregar, “Analysis of Dry Food Ingredients Procurement Model Based on EOQ (Economic Order Quantity) at the Nutritional Installation”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. SpecialIssue, pp. 643–650, Dec. 2023.