Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "Abū Thughrah, Abū l-Qāsim ʿUbayd Allāh ibn ʿAbd Allāh al-Iskāfī — أبو ثغرة أبو القاسم عبيد الله بن عبد الله الإسكافي " 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/368
   
      
         
            
               Abū Thughrah, Abū l-Qāsim ʿUbayd Allāh ibn ʿAbd Allāh al-Iskāfī
               أبو ثغرة أبو القاسم عبيد الله بن عبد الله الإسكافي
               Abū Thughrah, Abū l-Qāsim ʿUbayd Allāh ibn ʿAbd Allāh al-Iskāfī, 4th/10th-c. official
               https://usaybia.net/person/368
               
                  official
               
               
                  A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah
                  
                  10.5.3