The Continuous Classical Optimal Boundary Control of a Couple Linear Elliptic Partial Differential Equations. Al-Nahrain Journal of Science, [S. l.], n. 1, p. 137–142, 2018. Disponível em: https://www.anjs.edu.iq/index.php/anjs/article/view/2025.. Acesso em: 20 may. 2024.