Thomas Carlson (eds.), "Mygdonius" in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/140
    
        
            
                
                    Mygdonius
                    Çağçağ
                    الهِرماس
                    الهرماس
                    A tributary of the Khabur river which flows
                        past Nisibis.
                    
                        Attestation of name الهِرماس in the Muʿjam
                                al-buldān of Yāqūt al-Ḥamawī.
                        
                    
                    
                        Attestation of name الهرماس in the Kitāb
                                al-aʿlāq al-nafīsa of Aḥmad ibn ʿUmar Ibn
                                Rustah.
                        
                    
                    
                    https://bqgazetteer.bethmardutho.org/place/140
                    http://syriaca.org/place/140
                    http://pleiades.stoa.org/places/874509
                    http://en.wikipedia.org/wiki/Jaghjagh_River
                    http://dbpedia.org/resource/Jaghjagh_River
                    
                        The Gorgias Encyclopedic Dictionary of the
                            Syriac Heritage
                        
                        Map I C1, III
                    
                    
                        Muʿjam al-buldān
                        Yāqūt al-Ḥamawī
                        
                        V459
                    
                    
                        Kitāb al-aʿlāq al-nafīsa
                        Aḥmad ibn ʿUmar Ibn Rustah
                        
                        90