in the Book of Adam’ The Chronology of the Halakhah and the Mythical Perception of History in the Late Pumbeditian Thought” Tarbitz, 74:2 (2006).(Heb.) External links Lecture on Rav Sherira Gaon by Dr. Henry Abramson Lecture, , Jan 2020. Iggeret Rav Sherira Gaon, Da'at Encyclopedia Chabad.org Rav Sherira Gaon Geonim Rabbis of Academy of Pumbedita Chroniclers 900s births 1000s deaths Year of birth uncertain Year of death uncertain