DUBROVIN, Nikolay I. Automorphisms of the Module Formal Sums. Sarajevo Journal of Mathematics, [S. l.], v. 14, n. 2, p. 265–274, 2019. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/78. Acesso em: 18 jan. 2025.