BEGMURATOV, K. A.; MARTYNYUK, A. A. Analytical construction of the hierarchical matrix Lyapunov function for impulse systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 4, p. 548–557, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5030. Acesso em: 5 dec. 2025.