1. Ptolemy and the meta-helikôn
2. Mean Motions in Ptolemy’s Planetary Hypotheses
3. The Arabic Version of Ptolemy's Planetary Hypotheses
4. Hamm, Elizabeth. 2011. Ptolemy’s Planetary Theory: An English Translation of Book One, Part A of the Planetary Hypotheses with Introduction and Commentary. Ph.D. diss., University of Toronto.
5. Morelon, Regis. 1993. “La Version Arabe Du Livre Des Hypothèses De Ptolémée.” Mélanges Institut Dominicain d’Études Orientales du Cairo 21: 7–85.