KHUSAINOV, D. Ya.; SHEVELO, V. N. Stability of differential systems with rational right-hand sides. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 9, p. 1295–1299, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5530. Acesso em: 5 dec. 2025.