Jasim, Doaa Kateb, Safaa Juma Al-Qaisi, and Wafaa Abd Ibrahim. “Mixed Triple Optimal Control Vector Problem for Nonlinear Triple Elliptic System”. Iraqi Journal of Science 66, no. 8 (August 30, 2025): 3367–3374. Accessed May 10, 2026. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/13147.