Heinz Halm, Ph.D. (1967) in Islamic Studies, University of Bonn, is Emiritus Professor of Islamic History at the University of Tübingen. He specialises in Shi'ite Iran; his book Shiism appeared in an English translation in 1991.
Michael Bonner, Ph.D. (1987) in Near Eastern Studies, Princeton University, was Associate Professor of Medieval Islamic History at the University of Michigan, Ann Arbor. His translation of A. Noth, Quellenkritische Studien zu Themen, Formen und Tendenzen frühislamischer Geschichtsüberlieferung was published in 1994 as The Early Arabic Historical Tradition.
