Existence of Optimal Control for a Nonlinear Partial Differential Equation of Hyperbolic Type. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 12, n. 4, p. 1595–1601, 2019. DOI: 10.29020/nybg.ejpam.v12i4.3577. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3577. Acesso em: 21 nov. 2024.