Naji, Fetan J., Jamil Amir Al-hawasy, and Ion Chryssoveghi. “Quaternary Boundary Optimal Control Problem Dominating by Quaternary Nonlinear Parabolic System”. Al-Mustansiriyah Journal of Science 34, no. 3 (September 30, 2023): 86–101. Accessed May 17, 2024. https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/1286.