BAI, Yongzhen; LI, Yannan; WANG, Youyu. Lyapunov-Type Inequalities for Quasilinear Systems with Antiperiodic Boundary Conditions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 12, p. 1646–1656, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2543. Acesso em: 5 dec. 2025.