"Al-Farghānī On the Astrolabe, Richard Lorch (Ed.), in: Boethius, Band 52, Franz Steiner Verlag, Stuttgart (2005), viii + 447 pp. 80.00€, ISBN: 3-515-08713-3". Historia Mathematica. 34 (4): 433–434. 2007-11-01. doi:10.1016/j.hm.2006.11.003. ISSN0315-0860.
"Al-Farghānī On the Astrolabe, Richard Lorch (Ed.), in: Boethius, Band 52, Franz Steiner Verlag, Stuttgart (2005), viii + 447 pp. 80.00€, ISBN: 3-515-08713-3". Historia Mathematica. 34 (4): 433–434. 2007-11-01. doi:10.1016/j.hm.2006.11.003. ISSN0315-0860.