Revamping Ptolemy’s Proof for the Sphericity of the Heavens: Three Arabic Commentaries on Almagest I.3

Langermann, Y. T. (2020). Revamping Ptolemy’s Proof for the Sphericity of the Heavens: Three Arabic Commentaries on Almagest I.3. In Ptolemy’s Science of the Stars in the Middle Ages (pp. 159–180). Brepols Publishers. https://doi.org/10.1484/m.pals-eb.5.120178