Al-Hawasy, jamil Amir, and Wissam A. Abdul-Hussien Al-Anbaki. “The Classical Continuous Optimal Control for Quaternary Nonlinear Parabolic Boundary Value Problems With State Vector Constraints”. Ibn AL-Haitham Journal For Pure and Applied Sciences 35, no. 3 (July 20, 2022): 135–145. Accessed November 24, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/2816.