BOICHUK, O.; PANASENKO, Ye.; POKUTNYI, O. Boundary-value problems for the Lyapunov equation. І. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 3, p. 353–372, 2024. DOI: 10.3842/umzh.v76i3.7785. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7785. Acesso em: 5 dec. 2025.