Anastos, Milton V. (1962). «The History of Byzantine Science. Report on the Dumbarton Oaks Symposium of 1961». Dumbarton Oaks, Trustees for Harvard University. Dumbarton Oaks Papers. 16: 409–411. JSTOR1291170. doi:10.2307/1291170
King, David A. (março de 1991). «Reviews: The Astronomical Works of Gregory Chioniades, Volume I: The Zij al- Ala'i by Gregory Chioniades, David Pingree; An Eleventh-Century Manual of Arabo-Byzantine Astronomy by Alexander Jones». Isis. 82 (1): 116–8. doi:10.1086/355661
jstor.org
Anastos, Milton V. (1962). «The History of Byzantine Science. Report on the Dumbarton Oaks Symposium of 1961». Dumbarton Oaks, Trustees for Harvard University. Dumbarton Oaks Papers. 16: 409–411. JSTOR1291170. doi:10.2307/1291170