BALANOV, Zolman; KRAWCEWICZ, Wiesław; ZUR, Shira. On orbital topological equivalence of cubic ODEs in two-dimensional algebras. Topological Methods in Nonlinear Analysis, [S. l.], v. 25, n. 2, p. 205–234, 2005. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2005.011. Acesso em: 27 dec. 2025.