Full reference OpenMind biblio ref
Calvo, Emilia, and S. Ansari. 2002. “Ibn Al‐Kammād's Astronomical Work In Ibn Al‐Hāʾim's Al‐Zīj Al‐Kāmil Fī‐ʾL‐Taʿālīm: I. Solar Year, Trepidation, And Timekeeping”. In Science And Technology In The Islamic World, 21:109-120. Turnhout: Brepols.
{ Emilia Calvo, S. Ansari, 2002 #1066 }