Al-Hawasy, jamil A. and A. Abdul-Hussien Al-Anbaki, W. 2022. 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, 3 (Jul. 2022), 135–145. DOI:https://doi.org/10.30526/35.3.2816.