RAMIREZ CARRASCO, S.; CÁRDENAS FALCÓN, A. On the R−automorphisms of formal power series on several indeterminates and with coefficients over the ring R . Selecciones Matemáticas, [S. l.], v. 9, n. 01, p. 210 - 226, 2022. DOI: 10.17268/sel.mat.2022.01.18. Disponível em: https://revistas.unitru.edu.pe/index.php/SSMM/article/view/4461. Acesso em: 23 jun. 2024.