KAPUSTYAN, O. V.; SUKRETNA, A. V. Averaged Synthesis of the Optimal Control for a Wave Equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 5, p. 612–620, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3937. Acesso em: 5 dec. 2025.