JEZIERSKI, Jerzy. Periodic points of self-maps of products of lens spaces $L(3)\times L(3)$. Topological Methods in Nonlinear Analysis. Online. 26 February 2023. Vol. 61, no. 1, pp. 331 - 352. [Accessed 22 July 2024]. DOI 10.12775/TMNA.2022.053.