1. Being a Sabian at Court in Tenth-Century Baghdad Roberts, Alexandre M. 2017 Articles HarraniansHistoryReligionThābit ibn Qurrah al-Ḥarrānī, -901
2. The Crossing Paths of Greek and Persian Knowledge in the 9th-century Arabic 'Book of Degrees' Roberts, Alexandre M. 2013 Chapters (Layout Features) Science, AncientCivilization, Arab--Greek influencesNatal astrology
3. Al-Mansur and the Critical Ambassador Roberts, Alexandre M. 2012 Articles AbbasidsCivilization--Byzantine influencesMaʼmūn, Caliph, 786-833