KHUSAINOV, D. Ya.; SHEVELENKO, E. E. Stability of difference rational systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 3, p. 428–431, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4628. Acesso em: 27 apr. 2025.