GIERZKIEWICZ, A.; WÓJCIK, K. On the cohomology of an isolating block and its invariant part. Topological Methods in Nonlinear Analysis, [S. l.], v. 32, n. 2, p. 313–326, 2008. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2008.050. Acesso em: 2 dec. 2024.