PERESTYUK, N. A.; CHERNIKOVA, O. S. Some modern aspects of the theory of impulsive differential equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 1, p. 81–94, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3139. Acesso em: 6 dec. 2025.