Al-Hawasy JAA, Rasheed TM. The Optimal Control Problem for Triple Nonlinear Parabolic Boundary Value Problem with State Vector Constraints. Iraqi Journal of Science [Internet]. 2022 May 25 [cited 2026 Jul. 4];63(5):2140-7. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/4537