Naji, F. J., Al-hawasy, J. A., & Chryssoveghi, I. . (2023). Quaternary Boundary Optimal Control Problem Dominating by Quaternary Nonlinear Parabolic System. Al-Mustansiriyah Journal of Science, 34(3), 86–101. https://doi.org/10.23851/mjs.v34i3.1286