1.
Balibrea F, Cánovas Peña JS, López VJ. Some invariants for σ-permutation maps. Ann. Math. Sil. [Internet]. 1999 Sep. 30 [cited 2025 Dec. 5];13:51-60. Available from: https://journals.us.edu.pl/index.php/AMSIL/article/view/14136