(2006) “In the Age of al-Farabi”, organisé par Peter Adamson au Warburg Institute, London. — Location: Warburg Institute (University of London) (25.June.2006)
de Callatay, G. (2006). World Cycles and Geological Changes according to the Brethren of Purity. “In the Age of al-Farabi”, organisé par Peter Adamson au Warburg Institute, London., Warburg Institute (University of London). https://hdl.handle.net/2078.5/203673