BIBLIOGRAPHY CONTRIBUTOR Aḥmad Djebbar] First name Aḥmad Last name Djebbar] Bibliography entries by this contributor Djebbar], Aḥmad, Muḥammad Ablāgh, and أبلاغ، محمد. 2001. Ḥayāt Wa-Muʿallafāt Ibn Al-Bannā Al-Marrākushī: Maʿa Nuṣūṣ Ghayr Manshūrah. 1st ed.. Vol. 29. Rabāṭ: Kullīyat al-Ādāb wa-al-ʿUlūm al-Insānīyah. Djebbar], Aḥmad. 2000. “ʿOmar Khayyām Et Les Activités Mathématiques En Pays D'islam Aux Xi–Xii Siècles”. Farhang 12 (29-32): 1-31.