Simonetta CalderiniSimonetta Calderini is Senior Lecturer in Islamic Studies at Roehampton University, London, and is the author of several articles and chapters on medieval Ismaili and Islamic studies. She recently contributed to the volume by Petr Fiala, et al, eligious and political authority in Judaism, Christianity and Islam (CDK 2004) and to J. D. McAuliffe (ed.), Encyclopedia of the Qur'an (2003). Read More Read Less