Full reference OpenMind biblio ref
Hogendijk, Jan. 1996. “Which Version of Menelaus’ Spherics Was Used by Al-Muʾtaman Ibn Hūd in His Istikmāl?”. In Mathematische Probleme Im Mittelalter, ed. Menso Folkerts. Wiesbaden: Harrassowitz.
{ Jan Hogendijk, Menso Folkerts, 1996 #11997 }