“Michael the Syrian as a Source for Economic History,” Hugoye: Journal of Syriac Studies 3, no. 2 (July 2000)
Near East, II Land Use and Settlement Patterns (Princeton: Darwin Press, 1994), 221-29
“Commerce in Early Islamic Iraq,” asiem afrika latein amerika, 20 (1993), 699-720
“The Age of Conversions: A Reassessment,” in M. Gervers and J. Bikhazi, eds., Conversion and Continuity. Indigenous Christian Communities in Islamic Lands, Eighth to Eighteenth centuries (Toronto: Pontifical Institute of Medieval Studies, 1990), 135-50.
“The Arabisation of the Gulf,” in B.R. Pridham, ed., The Arab Gulf and the Arab World(London: Croom Helm, 1988), 3-28.
The History of al-Tabari,, Vol. XVIII, Between Civil Wars: The Caliphate of Mu’awiyah(Albany, 1987).
“Land Use and Settlement Patterns in Late Sasanian and Early Islamic Iraq,” in G.R.O. King and Averil Cameron, The Byzantine and Early Islamic
“Landholding and Social Change: Lower al-‘Iraq in the Early Islamic Period,” in T. Khalidi, Land Tenure and Social Transformation in the Middle East (Beirut, 1984), 209-22.