Nasif, Hadeel Hussein, and Sadiq Al-Nassir. “Discrete Optimal Control Mathematical Model of Diabetes Population”. Iraqi Journal of Science 64, no. 4 (April 30, 2023): 1925–1934. Accessed January 8, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7743.