Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "Aḥmad ibn ʿAbd Allāh ibn Yūsuf — أحمد بن عبد الله بن يوسف " in Communities of Knowledge: Interreligious Networks of Scholars in Ibn Abi Usaybiʿa’s History of the Physicians last modified June 23, 2021, https://usaybia.net/person/421 Aḥmad ibn ʿAbd Allāh ibn Yūsuf أحمد بن عبد الله بن يوسف Aḥmad ibn ʿAbd Allāh ibn Yūsuf, brother of Ibn (al-)Shibl al-Baghdādī https://usaybia.net/person/421 A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah 10.51.3