ʿUmar b. al-Khaṭṭāb and the Abbasids. Journal of the American Society for Premodern Asia, [S. l.], v. 136, n. 4, p. 763–783, 2016. DOI: 10.7817/jameroriesoci.136.4.0763. Disponível em: https://mail.lockwoodonlinejournals.com/index.php/jaos/article/view/1338. Acesso em: 3 may. 2026.