AHMED, G.; AHMED, G. Coclosed Rickart Modules. Ibn AL- Haitham Journal For Pure and Applied Sciences, [S. l.], v. 2017, n. IHSCICONF, p. 452–462, 2018. DOI: 10.30526/2017.IHSCICONF.1818. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1818. Acesso em: 25 may. 2022.