1. Bowen, Alan C., and Robert B. Todd. 2004. Cleomedes’ Lectures on Astronomy: A Translation of The Heavens with an Introduction and Commentary. Berkeley-Los Angeles-London: University of California Press.
2. Bruin, Frans. 1966. On the observations of Hipparchos in Nicaea and Rhodos. Al-Biruni Newsletter 2 (Beirut, January 1966), available at https://archive.nyu.edu/handle/2451/60896.
3. Cohen, M.R., and I.E. Drabkin. 1958. A Source Book in Greek Science. Cambridge, Mass.: Harvard University Press.
4. Goldstein, B.R., and A.C. Bowen. 1995. Pliny and Hipparchus’s 600-year cycle. Journal for the History of Astronomy 26: 155–158.
5. Heath, Thomas. 1921. A History of Greek Mathematics, vol. 2. Oxford: Clarendon Press.