KALIL, E. Economic and financial change in the rule of Omar bin Al-Khattab. Adab Al-Rafidayn, [S. l.], v. 1, n. 2, p. 77–121, 1971. DOI: 10.33899/radab.1972.166509. Disponível em: https://jamh.uomosul.edu.iq/index.php/radab/article/view/32694. Acesso em: 28 sep. 2025.