The Classical Continuous Optimal Control for Quaternary Nonlinear Parabolic Boundary Value Problems. Baghdad Science Journal, Iraq, Baghdad, v. 20, n. 4, p. 1366, 2023. DOI: 10.21123/bsj.2023.7039. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/7039.. Acesso em: 22 may. 2024.