ANSARI-TOROGHY, H.; FARSHADIFAR, F. On graded second modules. Tamkang Journal of Mathematics, [S. l.], v. 43, n. 4, p. 499–505, 2012. DOI: 10.5556/j.tkjm.43.2012.1319. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1319. Acesso em: 7 may. 2024.