J. A. A. . Al-Hawasy, “The Continuous Classical Optimal Control of a Couple Nonlinear Hyperbolic Partial Differential Equations with Equality and Inequality Constraints”, Iraqi Journal of Science, vol. 57, no. 2C, pp. 1528–1538, Jun. 2022, Accessed: Dec. 21, 2025. [Online]. Available: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7170