Ugo Zanetti and Nathan P. Gibson (eds.), "The medieval legend of the last Roman Emperor and its messianic origins" in last modified January 4, 2016, http://syriaca.org/bibl/1059
    
        
            
                
                    
                        P.J.
                        Alexander
                    
                    The medieval legend of the last Roman Emperor and
                     its messianic origins
                    http://syriaca.org/bibl/1059
                
                
                    Journal of the Warburg and Courtauld
                     Institutes
                    
                        1978
                    
                    41
                    1-15