Dea Handayani Juniar, A. H. Wigena, and Utami Dyah Syafitri, “D-Optimal Design for Mixture Process Variable with Split-Plot Approach Using a Genetic Algorithm ”, IJSBAR, vol. 60, no. 4, pp. 360–375, Dec. 2021, Accessed: Sep. 21, 2025. [Online]. Available: https://gssrr.org/JournalOfBasicAndApplied/article/view/13562