PERESTYUK, N. A.; SKRIPNIK, N. V. Averaging of set-valued impulsive systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 1, p. 126–142, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2409. Acesso em: 5 dec. 2025.