BIHUN, D. S.; POKUTNYI, O. O; PANASENKO, E. V. Autonomous nonlinear boundary-value problems for the Lyapunov equation in Hilbert space. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 7, p. 867–878, 2021. DOI: 10.37863/umzh.v73i7.6691. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6691. Acesso em: 5 dec. 2025.