J. M. Fiey, Jeanne-Nicole Mellon Saint-Laurent and Nathan P. Gibson, (eds.), "Encyclopaedia Iranica" in Encyclopaedia Iranica last modified April 25, 2016, http://syriaca.org/bibl/1388
    
        
            
                
                    
                        Ehsan
                        Yarshater
                    
                    Encyclopaedia Iranica
                    http://syriaca.org/bibl/1388
                    50
                    http://zotero.org/groups/392292/items/PAGGCU7J
                    http://www.worldcat.org/oclc/8833211
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                        London; Boston
                        Routledge & Kegan Paul
                        1982