GARRISI, D. On the spectral flow for paths of essentially hyperbolic bounded operators on Banach spaces. Topological Methods in Nonlinear Analysis, [S. l.], v. 36, n. 2, p. 353–379, 2010. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2010.040. Acesso em: 22 jul. 2024.