Bibliographie selective
– The History of al-Ṭabarī Taʾrīkh al-rusul waʾl-mulūk . 16, The community divided Ṭabarī, Muḥammad ibn Ǧarīr ibn Yazīd al- (839?-923), State university of New York, 1997.
– "The Value of Hafs And Warsh Transmissions For The Textual History Of The Qur’an" in Andrew Rippin’s (Ed.), Approaches of The History of Interpretation of The Qur’an, 1988, Clarendon Press, Oxford, p. 31-45.
– Studies in two transmissions of the Qur’ân, St Andrews, University of St Andrews, PhD, 1984, 292 p.