Ugo Zanetti and Nathan P. Gibson (eds.), "Theological progress and artistic regress in the hymns on Abraham Kidunaya attributed to St Ephrem" in last modified January 4, 2016, http://syriaca.org/bibl/776
    
        
            
                
                    
                        P.J.
                        Botha
                    
                    Theological progress and artistic regress in the
                     hymns on Abraham Kidunaya attributed to St Ephrem
                    http://syriaca.org/bibl/776
                
                
                    Acta Patristica et Byzantina
                    
                        1990
                    
                    1
                    77-98