SabraA. I., “Ibn al-Haytham's Criticisms of Ptolemy's Optics”, Journal of the history of philosophy, iv (1966), 145–50.
2.
PinesS., “Ibn al-Haytham's Critique of Ptolemy”, Proceedings of the Tenth International Congress of the History of Science, Ithaca 1962 (Paris, 1964), 547–50.
3.
Shukūk, 5; cf.CohenM. R. and DrabkinI. E., A source book in Greek science (Cambridge, Mass., 1958), 271–83.
4.
Cf.KennedyE. S. and RobertsV., “The Planetary Theory of Ibn al-Shātir”, Isis, 1 (1959), 227–35 (esp. p. 234); and KennedyE. S., “Late Medieval Planetary Theory”, Isis, lvii (1966), 365–78 fesn. nn. 377 f).