Levey, Martin (September 1952). "The Encyclopedia of Abraham Savasorda: A Departure in Mathematical Methodology". Isis. 43 (3): 257–264. doi:10.1086/348115. JSTOR227469. S2CID144775595.
Sela, Shlomo (2001). "The Fuzzy Borders between Astronomy and Astrology in the Thought and Work of Three Twelfth-Century Jewish Intellectuals". Aleph. 1 (1): 59–100. doi:10.2979/ALE.2001.-.1.59. JSTOR40385448. S2CID170436865.
Kaunzner, Wolfgang (1987). "On the Transmission of mathematical Knowledge to Europe". Sudhoffs Archiv. 71 (2). Franz Steiner Verlag: 129–140. JSTOR20777136.
Levey, Martin (September 1952). "The Encyclopedia of Abraham Savasorda: A Departure in Mathematical Methodology". Isis. 43 (3): 257–264. doi:10.1086/348115. JSTOR227469. S2CID144775595.
Sela, Shlomo (2001). "The Fuzzy Borders between Astronomy and Astrology in the Thought and Work of Three Twelfth-Century Jewish Intellectuals". Aleph. 1 (1): 59–100. doi:10.2979/ALE.2001.-.1.59. JSTOR40385448. S2CID170436865.
Levey, Martin (September 1952). "The Encyclopedia of Abraham Savasorda: A Departure in Mathematical Methodology". Isis. 43 (3): 257–264. doi:10.1086/348115. JSTOR227469. S2CID144775595.
Sela, Shlomo (2001). "The Fuzzy Borders between Astronomy and Astrology in the Thought and Work of Three Twelfth-Century Jewish Intellectuals". Aleph. 1 (1): 59–100. doi:10.2979/ALE.2001.-.1.59. JSTOR40385448. S2CID170436865.