Semi – Bounded Modules. Baghdad Science Journal, Iraq, Baghdad, v. 9, n. 4, p. 720–727, 2012. DOI: 10.21123/bsj.2012.9.4.720-727. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1418.. Acesso em: 6 may. 2024.