RYBAKOWSKI, K. P. Conley index continuation for singularly perturbed hyperbolic equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 22, n. 2, p. 203–244, 2003. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2003.037. Acesso em: 22 jul. 2024.