Full reference OpenMind biblio ref
Djebbar, Ahmed. 1993. “Deux mathématiciens Peu Connus De l’Espagne Du XIe siècle: Al-Muʾtaman Et Ibn Sayyid”. In Vestigia Mathematica: Studies in Medieval and Early Modern Mathematics in Honour of H. L. L. Busard, eds. Menso Folkerts and Jan Hogendijk, 79–91. Rodopi B.V.Editions: Amsterdam & Atlanta, GA.
{ Menso Folkerts, Jan Hogendijk, Ahmed Djebbar, 1993 #11335 }