* JewishEncyclopedia.com article* Portrait of Abulafia (PDF file)* "Circles" - from Life of the World to Come
==References==*The Complete Works of Abraham Abulafia (Hebrew)*JewishEncyclopedia.com article*Portrait of Abulafia (Archived 2009-10-24) (PDF file)*"Circles" - from Life of the World to Come