PERESTYUK, N. A.; CHERNIKOVA, O. S. Stability of solutions of pulsed systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 1, p. 98–111, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4989. Acesso em: 5 dec. 2025.