ABBAS, Mehdi S.; MANHAL, Mohammad F. Essential-Small M-Projective Modules. Iraqi Journal of Science, [S. l.], v. 59, n. 1B, p. 377–382, 2018. Disponível em: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/190.. Acesso em: 8 dec. 2025.