http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Jewish perceptions of the papacy and papal policy in the High Middle Ages
"One thousand seven anonymous" and papal sovereignty
"One thousand and seven anonymous" and papal sovereignty
"Parma ms. de Rossi 563" (in Hebrew): pages 67-71.