MUSTAFAEVA, R.; KHUSAINOV, D. Ya. Robust stability of systems with delay. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 6, p. 859–863, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5479. Acesso em: 11 apr. 2025.