FEL’SHTYN, Alexander. Reidemeister numbers. Topological Methods in Nonlinear Analysis, [S. l.], v. 21, n. 1, p. 147–154, 2003. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2003.009. Acesso em: 8 jul. 2025.