ROUEENTAN, Mohammad; ERSHAD, Majid. STRONGLY DUO AND DUO RIGHT S-ACTS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 32, p. 143–154, 2014. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6226. Acesso em: 7 aug. 2026.