CarmodyFrancis J., The astronomical works of Thābit b. Qurra (Berkeley, 1960).
2.
NeugebauerOtto, “Thābit ben Qurra ‘On the solar year’ and ‘On the motion of the eighth sphere’”, Proceedings of the American Philosophical Society, cvi (1962), 264–99.
3.
This is in his devastatingly negative review of Carmody's Thābit, which appeared in Speculum, xxxvii (1962), 99–103.
4.
For Duhem, see his Le Système du monde, ii (Paris, 1914), 246ff. My own arguments were initially presented in full ignorance of Duhem's in my Harvard dissertation in 1982; they will be repeated with further elaboration in my forthcoming edition, translation and commentary of Naṣīr al-Dīn al-Ṭūsī's Tadhkira.
5.
For an indication that Ptolemaic astronomy was far from dominant during this early period, see Hāshimī'sKitāb fī'ilal al-zījāt (Scholars' Facsimilies & Reprints, Delmar, N.Y., 1981).