Sáenz Badillos A. Sobre el autor de las Tešubot ʿal Se'adyah. In: Exile and diaspora: studies in the history of the Jewish people presented to Professor Haim Beinart. [Ed. Aharon Mirsky, Abraham Grossman, Yosef Kaplan]. Ben-Zvi Institute & The Hebrew University ; 1991. pp. 26 - 43.