Sela, S. (2001). The Fuzzy Borders Between Astronomy and Astrology as Reflected in the Thought and Work of Three Twelfth-Century Jewish Intellectuals. Aleph.

Sela, Shlomo. "The Fuzzy Borders Between Astronomy and Astrology as Reflected in the Thought and Work of Three Twelfth-Century Jewish Intellectuals." Aleph 2001.

Sela, Shlomo. "The Fuzzy Borders Between Astronomy and Astrology as Reflected in the Thought and Work of Three Twelfth-Century Jewish Intellectuals." Aleph, 2001.