KOMLEVA, T. A.; PLOTNIKOV, A. V.; SKRIPNIK, N. V. Differential equations with set-valued solutions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 10, p. 1326–1337, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3247. Acesso em: 6 dec. 2025.