LIMA, Dahisy V. de S., NETO, Oziride Manzoli, DE REZENDE, Ketty A. and DA SILVEIRA, Mariana R. Cancellations for circle-valued Morse functions via spectral sequences. Topological Methods in Nonlinear Analysis. Online. 9 December 2017. Vol. 51, no. 1, pp. 259 - 311. [Accessed 3 July 2024].