S. D. Goitein, Palestinian Jewry in Early Islamic and Crusader Times (in Hebrew) (Jerusalem: Yad Izhak Ben Zvi Publications, 1980).
for edition see
pp. 79-81
Bibliographic citation
Miriam Frenkel, The Compassionate and Benevolent: The Leading Elite in the Jewish Community of Alexandria in the Middle Ages (in Hebrew) (Jerusalem: Ben-Zvi Institute for the Study of Jewish Communities in the East, 2006).