S. ABDULLAH, B.; ب. On Strongly  – Regular Rings. Journal of Education and Science (JES), [S. l.], v. 22, n. 2, p. 127–131, 2009. DOI: 10.33899/edusj.2009.57704. Disponível em: https://rjps.uomosul.edu.iq/edusj/article/view/17490. Acesso em: 4 aug. 2025.