LIMA, Dahisy V. de S.; NETO, Oziride Manzoli; DE REZENDE, Ketty A.; DA SILVEIRA, Mariana R. Cancellations for circle-valued Morse functions via spectral sequences. Topological Methods in Nonlinear Analysis, [S. l.], v. 51, n. 1, p. 259–311, 2017. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2017.047. Acesso em: 8 jul. 2025.